Right Turn at a Tight Corner With a 75-Foot Combination
You are driving a 75-foot tractor-trailer with a 53-foot trailer through a small Missouri town. You need to turn right from a two-lane road onto a narrower street. The corner has a stop sign, a utility pole about 8 feet from the curb, and a pedestrian signal. Your lane is 12 feet wide; the receiving street has a 10-foot lane and a 4-foot shoulder. A car is stopped at the limit line on the cross street, and another car is close behind you. It is raining, and pedestrians are waiting under an awning near the corner. The light is green, but you must yield to pedestrians. Your trailer's rear wheels will off-track inside the tractor's path. You have already checked that the street is not blocked beyond the corner. The curb is painted red on the near side.
1. Where do you position the tractor before the turn, and when do you begin steering? Explain using off-tracking and the pole.
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Approach in the right lane but use the left side of your lane, or the left lane if it is legal and clear, to create room for the trailer to off-track without hitting the curb or pole. Do not swing so wide that you crowd oncoming traffic or the car behind. Begin the turn later than you would in a car: wait until the tractor's drive axles are near the corner, then steer right firmly and smoothly. If you start too early, the trailer cuts the corner and the right rear tires track toward the curb and pole. If you start too late, the tractor nose may crowd the stopped car or the far curb. Watch the trailer's right rear wheels in the mirrors throughout the turn. In rain, slow before the corner and make one smooth steering input rather than a series of jerks.
2. The trailer's right rear tires are tracking toward the curb and the utility pole. What do you do?
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Stop before the tires reach the curb or pole. Do not jerk the steering wheel or accelerate to try to pull the trailer clear; that can swing the tractor nose into the stopped car or cause the trailer to climb the curb. If you have room and traffic control, back up slightly to re-align, but backing in an intersection is high risk and needs a spotter or someone controlling traffic. If backing is not safe, stop and assess whether the car at the limit line can move or whether you need to wait for the pedestrians and traffic to clear. Continuing over the curb risks tire, wheel, and suspension damage and can tip the load. If the pole clearance cannot be made safely, choose another route.
3. How do the rain and the pedestrians change your plan for this turn?
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Wet pavement reduces traction and lengthens stopping distance, so slow down before the turn and avoid hard braking while steering. Pedestrians may be hurrying under the awning and may not look at a truck; yield fully and do not use the horn aggressively. Keep the turn speed low enough that you can stop if someone steps off the curb. Use wipers and mirrors, and allow more space behind the car ahead. Because the trailer will off-track, wet curbs and painted lines are more slippery, so keep the trailer tires out of the gutter. Make the turn in one smooth motion, and if anything is uncertain, stop and wait rather than forcing the combination through a tight wet corner.