FL CDL Combination study materials
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Right Turn With a Long Trailer and an Occupied Left Lane

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Right Turn With a Long Trailer and an Occupied Left Lane

You are driving a 53-foot trailer through a Florida city and need to make a right turn from a 12-foot lane into a 13-foot receiving lane. The corner curb radius is about 25 feet, and a concrete utility pole sits 8 feet back from the curb on the inside corner. In a turn this tight, your trailer’s rear axles off-track roughly 6 feet. A box truck is stopped in the left lane beside you, and a pedestrian is waiting on the corner. The light turns green. Your tractor is a long-nose conventional with a 240-inch wheelbase. The trailer is loaded to 76,000 lb gross. You have driven this route before, but always in a straight truck. Traffic behind you is impatient, and the right-turn arrow is not protected.

1. How should you position the tractor before starting the turn, and what is the risk of swinging into the left lane?

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Set up as far right as the lane allows without hitting the curb, but recognize that a 53-foot trailer with about 6 feet of rear off-tracking may need extra room. The usual technique is to begin the turn later and use the full width of the lane, with a modest left swing only if the left lane is clear. The risk is the box truck stopped in that lane: a left swing would sideswipe it or force you into oncoming traffic. If you cannot swing, the trailer’s rear axles will cut closer to the inside curb, toward the pole 8 feet back. So first check the left mirror and left blind spot, and do not move left until the lane is clear. If the box truck stays, wait behind the stop line or adjust your approach; a tight turn is not worth a collision.

2. The light is green, the box truck stays put, and traffic behind you honks. What is the safe decision?

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Wait. The horn does not create space. With the box truck occupying the left lane, you cannot make the left swing that would keep the trailer’s rear axles away from the pole. Turning tight from the 12-foot lane would put the trailer’s off-track path about 6 feet inside the tractor’s path, directly toward the curb and the pole, with a pedestrian on the corner. The safe options are to wait for the box truck to move, let traffic clear and then make a wider approach, or, if the intersection layout allows, take a different route. Do not let a following driver pressure you into a turn that has no room for the trailer. If you are already past the stop line and blocking the crosswalk, stop and reassess rather than commit.

3. As you turn, the trailer tires approach the curb and the pole. What should you do?

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Stop before the trailer reaches the curb or pole. Off-tracking is a geometry problem; accelerating or steering harder will not make the trailer rear move outward. Continuing to pull it around is how trailers strike poles and curbs. Stop, set the parking brake, and check the right mirror and the area around the trailer. If there is room and it is safe, pull forward to straighten and reset the turn; back up only if you have a clear area and a spotter, because backing in an intersection with a pedestrian nearby is high risk. If you cannot reset, hold your position and get help, even if it means waiting for the box truck or a police officer. The pedestrian and the pole are fixed hazards; your path must change, not theirs.