Driving a locomotives does not involve utilizing the number of control options of some forms of transportation. Unlike the family car there is no steering wheel for the engineer since Locomotives are limited to following the line of the tracks and unlike a 747 they stay on the ground. Basic options are forward or reverse. To accomplish this there is a throttle for increasing or decreasing speed. There are braking options provided by the dynamic brakes or by releasing air in the line causing the brake shoes to press against the wheels of the cars and locomotives, eventually stopping the train. Mechanical braking is necessary since as the locomotive slows down the dynamics fade away to nothing and are not sufficient to actually bring the train to a halt. Having said all this remember that there are only three prime colors. If you present these to a Leonardo DaVinci he can manipulate them to produce the Mona Lisa. If you give them to Koko the Gorilla the results may be slightly less impressive. It is the combination in which these are applied that is referred to as train handling and here the fine touches come into play. The throttle is divided into 8 different positions (9 if you include off) and the dynamics the same amount. Placing the throttle in run 8 means that the riostat is in this position controlling the revolutions of the prime mover to generate the electricity that is sent to the trucks. Run 8 then simply signifies the amount of electricity being loaded and also means that in a given hour a certain amount of fuel (different for each type of unit) is being consumed. A four unit consist of SD40's generating 12,000 horsepower consumes 328.8 gallons every 30 minutes at Run 8. A GP60 at Run 8 for one hour is estimated at consuming 186.9 galons and at Run 1 12 gallons. With dynamics set at 8 the prime mover is basically at idle though providing coolant and is estimated at 23 gallons per hour. If enough units are linked together through the 27 wire jumper cable, main train line and 3 air hoses creating one giant unit, they should move the train, depending on its tonnage, at a specific speed on a specific grade. They will consume the same amount of fuel depending upon revolutions whether they are working a .5% grade or a 2.5% grade in any given hour. Going down grade the upper lever is used and the traction motors become generators that send the electricity they produce to resistor grids changing the electrical energy to heat energy which provides resistance slowing the train. The now generator traction motors wheels are turned because the train wants to get to the bottom of the grade. The effective of gravity on the wheels is the same as water pushing against the blades of a water powered generator at the base of a dam or steam turning the turbines of a steam powered generator. The electricity generated flows against the resister grid which as its names implies resists and sends the electricity back to the generators causing them to slow down while at the same time disipating the electrical build-up on the heat grid much like the wires of a toaster. On a 1% grade with a short train not as much resitance is required for the braking action and the lever can be set at a lower resistance level. On a 2.5% grade with a heavy train the wheels want to turn more rapidly to get to the bottom of the hill and this desire to turn faster creates more electricity sent against the resistors which in turn must be set at a higher level because of the increase in electrical "pressure". As the train slows the generators are turning slower and thus creating less electricity against the grids which return less "pressure" and eventually there is not enough electricity being generated to slow the train and further mechanical intrervention must take over. Maximum effectiveness is achieved at 25 mph with an effective range between 12 to 40 mph. In an excellent description of what the air hoses between units accomplish Doug Ellis states: (1) Actuating- This releases the engine brakes when a service application of the train brakes has been made. The engineer has to hold the engine brake handle down for 4 seconds per engine to fully release the engine brakes. (2) Application- This applies the engine brake when the whether stopping or standing still. (3) Main Reservoir- This hose is used to keep the pressure the same between all engines. When the main reservoir pressure decreases it causes the air compressors to start charging the main reservoir. The main reservoir is used to charge the train line, equalize the brakes after releasing the train brakes, sand the rail, and just about everything that is done with the air on a locomotive. (4) Train Line- That is the hose in which the air pressure is carried between the engines and the cars. Now that we know what the engineer has at his fingertips we have to look at what is behind the units to be controlled in the form of the consist. Strung out behind are the cars which in weight and momentum attempt to follow physical laws that an object at rest remains at rest and an object in motion remains in motion unless acted upon by some outside force. Heavier objects need more force acting against them than lighter ones. For this reason when double stack technology first began to show on the various roads the rule was that the double stacks were to be placed directly behind the units and the TOFC and COFC were placed behind them. This is because during braking movements if the heavier cars were placed behind the lighter ones the air pressure applying brakes would apply equally on all of the cars connected by air hose. The heavier cars would be less effected and would continue forward with their greater momentum and compress the cars where the brakes were slowing them at a greater rate. Not just in double stacks but in regular train loads heavier cars must be placed closer to the units than empties so that there is not a whipsaw momentum during braking (or acceleration) causing busted knuckles. An additional problem faced by the engineer is the length of train being controlled. While the lead locomotive has crested the top of a summit and is now proceeding down hill the rest of his cars are still climbing. Braking must take this into account so that the engineer learns to start applying braking techniques at a point where the downhill (or throttle for uphill) will exert the proper reaction on the entire line of cars. Mark twain refers in his "Life on the Mississippi" of steamboat pilots taking a sighting on a specific island headland to make a safe move across the current avoiding sandbars and other obstacles all of which changed constantly and had to be updated and tracked. Engineers make similar notations such as with a mile long train, "At mile post such and such as I cross the wash ease the throttle back to notch 6." Road foreman of engineers Steve Fabbri recalls one engineer who would take his sighting on a clump of trees and Steve asked him, "What are you going to do if between trips someone comes along and cuts them down?" But of course each engineer, as an individual has his own way of making these decisions based upon the train profile and his own gut reaction of how the cars behind him are reacting. From the time of the initial pullout the sensations experienced in the cab such as slack reaction or the cars pressing against the units give an indication of how things need to be handled down the road. Having laid the background we will now see how all of this applies to the 180 mile run between Southern Pacific's West Colton Yard and its Yard in Bakersfield with its combination of desert running and two of the topographical features that seem to interest railfans all over the country. These consist of Cajon Pass and the Tehachapi Mountains with its famous loop. We start out our westbound run (on the Southern Pacific movements towards San Francisco are designated as westbound and away from San Francisco as eastbound. This sometimes becomes confusing since in Northern California you can pass milepost #100 three times; (1) north of Manteca, (2) north of Stockton, (3) between Sacramento and Roseville.) in the administration building at West Colton where the crew of the westbound Mojave Flyer (the Mojave Flyer makes the trip between West Colton and Bakersfield with a switch movement at Mojave. There are two Mojave Flyers so that on any given day one is headed west and its counterpart headed east towards Colton) is picking up its train orders and track warrants along with a train profile. The "GA" graph (train profile) gives us our tonnage (2,174 tons), tons per operative brake, and axle count excluding units. We have 6,000 horsepower between our two units and 11 loads and 28 empties for a length of 1,697 feet. On the work order they find they will be dropping off 37 and picking up 6 cars at Mojave. The car types and contents are also included in the documentation. We will be restricted in speed to 50mph because we have a car with hazardous materials on the rear end and instructions of what to do in case of mishap is included so that it can be turned over to the proper authorities. Our engineer today is John (J.D.) Edwards, the conductor John DeLuaux, and the brakeman Paul W. (P.W.) Coffman. Road foreman of engines Steve Fabbri will also be making the trip with us. We take the Rezenberger van to our units which are parked down on track #2 beside the diesel service and discover we have been assigned two six-axle units (six axle units are necessary on this run to provide the needed tractive effort on the grades), Rio Grande SD40T-2 #5357 and leased GATX #7352. Steve checks the calibration of the wheels so that J.D. can set the speedometer and the ETD (end train device). Steve comes up with 2 3/8" for the flange which J.D. doubles and then adds to the 36" wheel diameter coming up with 40.4. The inspection card in the cab indicates that the last periodic inspection was at Pine Bluff, Arkansas on 8-20-93 and Steve fills out the daily inspection sheet (normally the engineer would do this but teamwork will get us out of the yard sooner) and on 10-28-93 signs it off at 1540. We call the roundhouse over the radio to get permission to use their 600 lead (at Colton the track designation is: #100's receiving yard; #200's bowl tracks; #400' departure tracks; #600's round house; #900's running tracks) since as a safety precaution for those working around the units the roundhouse controls all of the movements on their tracks. The spring switches in front of us show as green for clear while those beside us still have their lights as blue and we head out passing to the control of the trim tower on the east end of the yard. As we continue down on what is now track #905 J.D. tests the dynamic brakes to make sure everything is working properly (better to detect a problem before we leave the yard). Movement into and out of West Colton is protected by a tote board with the one on the east (actual direction not S.F. oriented) end at Pepper Avenue. It is flashing as #905 (our track) and we pass under Pepper, switch to track #926 which is now flashing on the board on the other side of Pepper and passing under again back up against our train first passing through what appears to be a canyon of cars also waiting to be taken out. Passing under Riverside and past the trim tower our conductor dismounts to give us instructions via hand signal and radio ("15 cars") and we make the connection. The carman assigned to getting us out gives J.D. the ETD calibration number over the radio (so that our receiver will only react with the ETD on the rear of our train). We check the air pressure for leaks by setting the air and then cutting the connection between the units and the cars. This allows the carman and the engineer to monitor any drop in pressure with the maximum allowable loss 5lbs in 1 minute. at 3lbs loss for 1 minute we are on the safe side and can proceed. Over 5lbs and we would have to correct the problem before departure. The trim tower gives us an, "All lined up" and we head back through the canyon of cars with instructions to, "Highball the tote board." The lights on the ground ahead of us all show yellow and we are lined up for Cajon. Looking back over our line of cars as we curve up over the balloon track J.D. changes the radio frequency from Channel #1 to Channel #2 and we are now under the guidance of dispatcher WR52 up in Roseville (WR52 controls from East Slover to the Cameron Crossovers (MP 370.4) ten miles west of Mojave and WR51 from Cameron to Sandcut (MP 325). There are plans to put the operation from Slover to Bakersfield entirely under WR52's protection) With our two units we are now at a length of 1,836' with a total axle count of 168 (important for scanners which may give a hotbox warning with the axle number). As we head towards Cajon, with our departure time at 1600 out of the yard, the sun is partially obscured with the remnants of the smoke from fires that have raged through Southern California the last two days. J.D. puts the throttle on "Run 8" and we head up the single track with green signals showing ahead and by MP 484 it is already dark enough to notice the reflection of our signals off of the MP marker. Without a lot of interaction between the engineer and the unit other than placing the throttle at the "8" position there might be a tendency to doze of, particularly if this was one of those warm Southern California afternoons. To counter this every 60 seconds or so (depending on the speed we are making) the alerter buzzer sounds off and a grid of red lights illuminates above the engineers head. When this sounds off he must make some contact with the controls or else the unit will automatically shut down. This safety measure is being installed in all units as they are being shopped. We will be doing approximately 15mph up the 2.2% grade of Cajon which will end at Hiland and as we pass "Dike" J.D.'s stopwatch gives us a 15.58mph reading. To our right we see a Union Pacific YRLAB on the Santa Fe downhill track. At Devore the usual gaggle of railfans wave from beside their campers and they will be getting a triple treat since the Santa Fe helpers are appearing on the downhill tracks and on the uphill track a Santa Fe hotshot pig train with Warbonnet power passes us, its ETD as a solitary red eye winking at us disappearing around a curve. We hit the horn at the "X" mark (Santa Fe uses a "W" for its horn indication) and continue our stolid pace. The Rio Grande unit we are in still has one of the old style rotating Mars headlights and so as the light grows dimmer it sweeps from side to side illuminating the foliage. The smoke in the air catches its beam along with the two lights mounted between the number boards. Above us on the interstate a stream of headlights and tail lights are a luminous river and below us a Santa Fe signal is flashing red to protect its eastbound on the uphill. Beside us rock cuts provide an eery sight and Steve uses his flashlight out the side window to show me the formation the crews refer to as the bowling pin. The scanner kicks off at MP475.1 with a report of no defects and then another scanner inspecting a train ahead kicks off which with consultation of the train lineup we have on board allows the crew to track where other trains they will be meeting with are at the moment. They guess this to be the RVHOQ (Roseville/Houston out of Bakersfield which will bypass Colton on its way east over Beaumont Hill). This is one of the reasons that the detectors between Warren-Mojave (MP 377) and East of Magunden (MP 318.8) broadcast on both the Santa Fe and SP frequencies. Because of the dry season (as evidenced by the last few days disasters) we pass some tank cars filled with water for firefighting use tied up at a siding. Despite the smoke this has the potential to be a beautiful night on the desert since a full moon is now rising and J.D. turns off the sweep mechanism of the Mars light making it a steady illumination as we continue to climb past "Canyon" with the steady throb of the unit occasionally interrupted by the "alerter". We continue through green signals which have a placard with the letter "G". The G stands for "grade" giving the engineer permission to proceed at restricted speed should he encounter a red. This is because of the hazard of stopping the train and being unable to produce the tractive effort necessary to continue again. At MP 465.3 we receive another "No Defects" message and before we can actually see the green signal around the next curve the reflection off of the rails lets everyone know we are still cleared. We pass over the top at Hiland (MP 463.0) and begin to pick up speed downhill to our limit of 50. We notify WR52 we are leaving Hiland. At the point that J.D. estimates enough of his train is on the downhill side he switches over to dynamics and by MP 460 we are traveling at 50mph. We dip under Interstate 15 and then out and at MP 457.9 receive another no defects report. By now we are picking up owls that fly in and out of the headlights and the occasional jack rabbit that paces the train and then veers off into the brush. The desert sand looks more like snow in the moonlight and with the population buildup we have frequent crossings with the gates reflecting the headlight beams, red lights flashing and cars coming to a halt at the sound of our airhorn blasting through the night. While we have been on a slight upgrade past the siding at Phelan we start down grade again and taking the throttle off go back onto dynamics. Using the signal box as a mark the throttle which is at 1 or 2 (depending on their tonnage we are pulling) when J.D. reaches the dragging detector at MP 446.6 he knows it is time to go back onto dynamics. He positions the dynamics lever which has a easy sliding motion compared to the ratchety feel of the throttle. Traveling at night brings a different set of "rule of thumb" running since only the track ahead is illuminated it is by watching his gauges that the engineer gets a sense of uphill or downhill travel. At night knowing your marks becomes even more important. Anticipating where the rear of your train is situated in relation to the grade change was especially important in the days when the conductor was in the last car and rough handling meant slamming him around as he was preparing beans over the cook stove. Now there is only "FRED" back there to keep happy but of course one doesn't want to make the hazardous material car unhappy either. MP 446.6 gives us a "No defects" and our train speed and at MP 443.5 we pass over the inky ribbon of the California Aqueduct. The train we heard tripping the detector earlier is sitting at the siding at Wash (MP 435.1) and we dim our headlights so as not to destroy the night vision of the crew standing trackside to give us a rollby. As we pass them we turn them back on and give their train a similar inspection. They give us a good rollby and we notify them that their ETD is still blinking. Suddenly a problem! We trip the hotbox detector at MP 430 with a message of "Stop The Train, Stop The Train" and the information that it has found a problem with axle 159 which is the third car from the end. We come to a halt and the conductor and brakeman climb out of the second unit and we see their flashlights bobbing through the night as they walk back to check twenty axles on both sides of the one reported. We notify the dispatcher that we have stopped because of the detector and WR52 authorizes us should we need to make a reverse movement to Wash to set out our car. This proves unnecessary as we get a false indication report from the conductor and notifying the dispatcher we are proceeding J.D. puts us at Run 8 to get us started again and by MP 428 we are in dynamics again at 50 MPH with the lights of Palmdale strung out in front of us. Making the portion of the run to Palmdale with undulating changes of grade is a constant switching back and forth between the throttle and dynamics with a touch of air brakes which is where the expert touch becomes important in keeping the slack between the cars from busting a knuckle. Constant communication between the engineer and the dispatcher becomes important as we approach the signal at 420.5 which is flashing yellow. J.D. calls on the radio and as we approach it changes to green. Through Palmdale we drop from 40 mph to 35 with a yellow flag displayed (actually a reflecting metal square on a post) as we leave the 26 year old Palmdale Cutoff that was built to provide Colton with direct access north bypassing the need to travel through Los Angeles on the Saugus Line and watching out the window can see that a stiff breeze is kicking up from the sight of an American flag standing straight out off of its pole. At MP 412.0 we receive a no defects message causing everyone to breath a sigh of relief but better for a detector to err on the side of caution then to pass on a potential derailment. WR52 also informs us that we will be picking up an extra empty car at Mojave and seeing a green flag at Lancaster return to 50 mph again. Leaving Lancaster we get additional instructions from the dispatcher that we will be holding in the yard after we switch for three trains to clear. At MP 396 we start up the grade on Rosamund Hill with the detector giving us a reading of "speed 5-zero, no defects" and J.D. attempts to stand up and take a bow. Actually once we are on the grade (1.3%) our speed, once again depending on tonnage, will drop to 30 or 32. We enter the yard at Mojave with a red over red over lunar signal, pass the "Welcome to Mojave" sign at 5mph and running over blowing tumbleweeds pass an empty coal train with its ETD blinking like the red eye of Sauron. We drop off the crew and pull forward so they can remove the ETD from the cars that will be set out and then with one of them riding the rear car proceed to make out setouts. There are eight tracks in the Mojave Yard and we will be leaving off empties that will be going back to Palmdale with our counterpart. Communicating over the radio our conductor guides us back and forth among the switches and with our through load down to 4 cars we pick up an additional 3 loads and 1 empty for a total now of 8. The ETD goes back on the rear and while we do the air test we watch the tops of an SP train's cars pass over the coal cars beside us and then in the distance a Santa Fe approaching down the grade. With permission from the dispatcher we back out of the yard and cross over to main track so that the Santa Fe can clear, back to the signal and allow him to enter the single track before proceeding. Once again both trains dim their lights out of courtesy and then back on to provide each other with a running rollby. We head up the hill passing the coal train which is on the parallel track with green signals for both at the signal bridge at MP 377 and J.D. puts it into run 8 on the 2.2% grade. While this is the same grade as Cajon we now have only 8 cars and the difference translates to 35mph. If the car count and weight had remained the same the sharper curves out of Mojave would have meant a decrease of 2mph since between Colton an Hiland none of the curves exceed 6% while here they are sharper. Signals facing us once again display the "G" placard. We have the green over the slower coal empties at MP371 so proceed on the Calaveras Cement Co. at Monolith (MP 370.4) where we find two loaded cars so our brakeman and conductor tie down the cars with their hand brakes we back into the switch and against the cement loads, join them to our train and then pick up the other 8 and continue on towards Tehachape. At MP 363.8, just east of Tehachape (MP 360.5), the high wide detector in the form of an inverted "U" gives us the first indication that we will be going through tunnels. Since double stack traffic over the mountain is by the Santa Fe they will be paying for the ultimate widening and deepening of the tunnels. Should a load fail to pass the detector the Santa Fe must set it out and return it to Barstow for other arrangements to transport it east. At the detector is also a speed board to decrease to 25mph. At a speed board the decrease takes effect 2 miles past the sign giving the engineer time to make the necessary braking maneuver. An increase in speed takes place at the sign. We pass a work train tied up at the K&J siding and next to the Tehachape Depot the AEI detectors. We are now in dynamics set at 4 1/2 at 475 amps and gliding down the hill at 25mph. I use the term gliding since in the cab the difference is dramatic as we cease to feel the throbbing of the throttled power and the engineer has to pay strict attention to his gauges. As we round the corner for the west switch at Marcel (MP354) we get a flashing yellow which we see in advance reflected off of the rail and a double yellow at MP352 meaning we will be taking the siding at Walong. At the east switch we get a red over yellow and take the siding. As we pull into the siding we can see below us the headlight of the ascending train. The rule is to keep a train ascending the grade on the move to keep from stalling. We come around the curve and there is a red light at the end of the siding.. Stepping down from the rain at the Loop Ranch on this moonlit night we can see the horses in the pasture separated from us by the fence. The headlight sweeps around the bend in front of us, dims and we watch the eastbound Mojave flyer with power of an SP GP60/SP SW1500/Santa Fe C30-7/Metro Link/CSX. Not the usual "Flyer" power. Once again with a green signal we pass a bad order articulated TOFC set with trailers still in place and at Rowen (MP 345.5) continue on green. As we glide through tunnels the light reflects off of the sides and the trees hanging near the tracks reflect back at us. At tunnel #8 the middle of the tunnel consists of the natural rock with the concrete lining only at the ends. When we leave tunnel #7 at 25mph we have only 23 seconds to stop after spotting the signal so the reflection on the track once again gives us a needed early warning. At MP336 we get a yellow since except for light engines the horse shoe curve at Caliente is restricted to 15mph for westbounds. We get a red over green at Caliente meaning that when the rear of our train hits the speed marker we can return to 25mph. Making the run at night gives a different perspective and the reflective bright orange paint on switches creates a diamond pathway along the tracks. Since we are still headed downhill we are still gliding through in dynamics and pass the remnants of tunnel "1/2" (named because it was created after tracks were realigned and all of the other tunnels had been numbered). We talk to WR51 who has us on a red signal and makes the switch to green hitting the appropriate computer keys at Roseville when we tell her we have only 10 cars and can make the move in time to clear for the train ahead of us. WR51 was not just taking our word for it. She could see the position of the other two eastbounds as red lines on her computer with the appropriate symbols printed over them. Talking to Bakersfield as we climb out we request information as to where they will be putting us in the yard and are back to 50mph after clearing the west switch at Ilmon. Just past the western high wide detector at MP 328.6 we hit a section where the grade switches from a downgrade of .4% to an upgrade of 1% necessitating some fancy throttle manipulation to keep the train together and then we are heading down the 1% grade to Bakersfield, passing a eastbound Santa Fe J.B. Hunt train and then a second Santa Fe with mid train helpers. At Edison it is only 8 more miles to Bakersfield and at 00:40 pull into the Bakersfield yard at its Quantico entrance (named after Quantico Blvd), wait for a Santa Fe transfer to shove back into the yard, line into track 11 (at Bakersfield the car tracks have numbers and the engine tracks letters), cut off our cars and pull forward. After a nights sleep at the Best Western it will be time to make the trip in reverse. The afternoon finds us climbing aboard the 1-RVWCM-27 (1st section of the Roseville/West Colton Manifest train which left Roseville on the 27th day of the month). We will be taking on a set of four six axle mid train helpers which will be cut into our train at Bakersfield rather than further east. Road Foreman of Engines Les Sack will be chaperoning, Terry Word (9 1/2 years as an SP engineer) will be handling the train and Allen Stroub will be our conductor. This will be a much heavier train than yesterday which is the reason for the four units and the helpers. At 5,277' it is three feet less than a mile and over that when the units and helpers are factored in. Total axle count will be 392 and a weight of 6,656 tons. Lead unit will be SD45 #7533 which had its last periodic inspection on 9-29-93 at Roseville. Terry makes his inspection, adjusts his side mirror, fills out the inspection sheet and as the air test has already been done when the hostlers put the train together Allen is ahead of us lining switches to get us out on the main since we are on track #4 and need to get over to track #2. As we pull forward to the corner of Edison and Oswell the rest of our train is still coming through the crossover and Allen keeps us informed over the radio as to the status of our rear end. "Allen, do you want me to clear Oswald?" "Yeah, might as well." Ahead of us we can see the track appear to climb. "SP7533, traffic is now moving across Oswald." "Ok." We have a green signal ahead but we pull under the shade of the bridge where Fairfax Road crosses over the tracks so our helpers can cut in where Allen cut the rear 28 cars. We pull forward and Allen reconnects after the helpers move into place. After he receives the word over the radio that everything is together Terry puts the throttle at Run 6 and we move out at 40mph. As the grade increases to 1% Terry places it at Run 8 and we hold the 40mph but by MP 324 near Sandcut Run 8 only brings us to 32mph. After Sandcut it is down hill with the dynamics alternating between 5 and 5 1/2 and then at the bottom where the flood of 1983 cut the tracks the throttle is cut back on at Run 5. Here we pass under the west high wide detector and then go back on double track at Ilmon (MP 331.3). Ilmon used to be a siding but after the flood the track was straightened out and made double track between Ilmon and Caliente. By MP 333 Run 8 translates as 30mph. At MP 334 the head end is again pointed down hill but the rest of the mile-long train is still headed uphill and Terry must anticipate how it will react as he places the throttle at run 6 and then when the track flattens out Run 5. We get a green signal where the track merges again to one and as we climb out of Caliente we can see the rest of our train to our right and get our first sight of the helpers. Climbing out of Caliente we start up the 2.5% grade while the rest of the train is still on flat ground calling for the right combination to keep everything rolling. At Bealville we again glimpse our helpers, this time to the right, and as it is late afternoon the sun steadily sinks over the ridges as we climb taking the shadow line up with it. Passing Woodford we meet a train waiting at the siding for us to pass before continuing down hill. At the loop we are at a steady 20mph at Run 8 and as we pass over our train we see the cross memorial for the conductor and brakeman who died in the San Bernadino derailment. The sun is just illuminating the top of the hill and the cross reflects brightly and then dims as the shadow line climbs steadily higher before our eyes. This serves as a moment of reflection for every train crew that passes and reminds them that railroading is not a game but that mistakes can have life and death consequences. Rule books are meant to be followed for a reason and it is better to err on the side of caution. We stop at the summit to help cut out the helpers. As we maneuver back against our train a huge, pale moon rises over the hills that are covered with the windmills placed there to take advantage of the wind and generate electricity. With word over the radio that everything is tied up we make the air test and then proceed without the helpers. Once past the cement plant it is down hill to Mojave and the dynamics provide the braking starting at MP 364. As we glide past the cattle in the fields beside the tracks and the windmills, some of them starting to turn, on the brown hillsides. Our headlights are starting to noticeably reflect off of the tracks in front of us and at MP371 the grade becomes 2.2% which will continue to Mojave. Releasing some of the air Terry allows the shoes on the cars to provide some of the braking as the track noticeably drops before us. In days past this would have sent the brakemen to the roofs to madly turn the wheels jutting off of the ends. The drop is more dramatic than at night when just the tracks ahead were illuminated giving more of a feel for the terrain and in the clean, crisp desert air hills to the side of us stand starkly dark against the sky which shifts from pink to blue as it nears the horizon. Keeping the dynamics between 6 and 7 the descending speed stays between 28 and 30mph on the speedometer. Greasers now appear on the curves in front of us as dark smudges against white ballast illuminated by both the headlights and the moon. Passing under the MP 377 signal bridge we see the lights on our track turn red while those on the left are green for the headlight we see climbing out of Mojave which turns out to be the empty oil cans returning from Long Beach and headed back to Bakersfield. It has been a while since we have had a crossing in front of us and as the tail of their train and the front of ours coincides with a crossing Terry lays on the horn to warn any cars that might be tempted to jump the actual raising of the gates. As we drop off empty cement cars at the yard we hear the detector going off for the oil cans. We notify WR52 we are ready to leave the yard getting a green signal ahead on the single track (from Mojave to Colton it is all single track with sidings). Noting that Purdy Road will be the indication of when the rear of the train has cleared the yard, upon reaching the crossing Terry increases the speed from 25 to 40mph and we will keep this speed till Lancaster after which we climb to Hiland and then it is all down hill over Cajon. Now down to 88 cars we leave Mojave in dynamics watching owls and jackrabbits appear in the light beams and behind us and to the side lights appear like the orange sparks in some dying fire or volcanic eruption which you can reach out and touch. One of the pleasures of night time railroading is this floating sensation with under a full moon the snow like sand and the dark blotches of bushes. The lights on the horizon give a dramatic illustration of just how built up this stretch of desert has become but along the tracks the route is still mostly empty. Past Lancaster a double yellow puts us into the siding at Dennis where perfect timing by the dispatcher makes it a meet on the run with both trains passing at reduced speeds and clearing each others tails to continue on into the night. The next yellow (MP 413)is a double yellow telling us we will taking a divergent route and at Palmdale Jct. (MP 414.4) we get a red over green and the switch is lined for us to take the cutoff track to the left. Now we are definitely climbing with the throttle at Run 7 and then back down to Run 6 over the undulations keeping us at 4omph. At MP 421 Run 2 keeps us there and MP 422 an increase to Run 5 and then Run 6 Terry anticipates what will be needed for the trailing cars to keep everything at speed. By MP 423 Run 8 is again required and then we have miles of absolutely straight track ahead of us climbing to MP 429 at a steady grade with only the alerter buzzer mandating some sort of reaction. The high tension wires that supply Los Angeles appear along our route and cactus appear to have their hands raised in salute. At Hiland we look over and to the right down at the Santa Fe tracks far below. We glide down via the dynamics whose whine is muffled by the cab and passing Mormon rocks see our first railfan standing in the dark at Canyon beside his truck. He waves and Terry hits the horn in a change of salutes. We continue down Cajon and ten minutes out from Slover call Colton for permission to enter and instructions on what to do with our cars. The dynamics between 7 and 6 and the air pressure at 80 psi keep us to a nice 30 mph and in the light of the full moon the rocks of Sullivan's curve hang over us while below an eastbound UP is climbing the Santa Fe tracks. Colton notifies us that we will be dropping our train off at track #153 in the receiving yard and then taking our power to the house (diesel service next to the wash racks). As we cross over Interstate 10 we see the sign "check your radio channel" and change back to channel #1. coming in on the elevated main tracks we look down into the illuminated yard where the carmen are working the cars under the orange lights. Continuing through we enter the receiving tracks on the west side of Cedar with the tote board flashing #900. entering the receiving tracks to be greeted by a double row of sentinels in the form of yellow lights lining both edges of the yard. "SP 7533 5 cars." "SP 7533 3 cars." "SP 7533 that'll do." Terry dumps the air brakes and Les who is now on the ground cuts the hoses. Terry walks through to what was until now the trailing unit and we head back through the yard following the yellow lights amongst the blue as our path homeward leaving the cars behind for the receiving yard carmen to inspect and ready to be humped. It has been a long two days but it has been interesting to observe how a train is handled by a skilled engineer. Anticipating what the conditions will be ahead and how your train will react, depending upon its makeup, is an art. It is acquired over time and not by everyone. The run between West Colton and Bakersfield provides the test of both mountain and desert railroading which the engineers who work the route encounter on every run. We did it over two warm fall days but in the summer the heat can have additional effect and in the winter snow and the resulting slippage can add new factors. It is a run not for the faint of heart and Southern Pacific is justly proud of the men and women who accept its challenge. I want to thank Steve Fabbri, Les Sack, John Edwards, John DeLuaux, Terry Word, Allen Stroub, Roger Boone, Carolyn Hall, John Ready, Doug Ellis, and Jack Martin for their help in preparing this article and for allowing me to ride along with the Southern Pacific as it fulfills its mission to its customers.