Right Turn at a Tight Oklahoma City Fuel Island
At a truck stop near Oklahoma City, a driver is pulling a 53-foot van with a 230-inch tractor wheelbase. He wants to turn right from a 14-foot fuel lane into a 12-foot exit lane. A concrete fuel island with a 4-foot pump guard sits on the inside of the turn, 15 feet from the corner. The driver starts the turn when the tractor's right front tire is 2 feet from the island curb, cuts the wheel sharply, and sees the tractor clear the guard. The trailer's right rear tires then strike the curb, breaking a mud flap bracket. He had checked the right mirror before turning but not during the turn. A pickup is stopped 20 feet behind the trailer, and the driver wants to back up and try again. The trailer is empty, the pavement is dry, and the driver has a spotter available by phone but not on the ground.
1. Why did the trailer's right rear tires hit the island even though the tractor cleared it?
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The tractor cleared the island because the driver was steering the front axle, but the trailer's rear axles cut a shorter path inside the turn. With a 53-foot trailer and a 230-inch wheelbase, low-speed off-tracking of several feet is normal; in a tight right turn, the rear trailer tires can track 3 to 5 feet inside the tractor's path. Starting the turn with the front tire only 2 feet from the curb left no room for that cut-in.
Checking the mirror only before the turn missed the moment the trailer tires closed on the island. The strike was a geometry problem, not just a visibility problem. The driver should have allowed for the trailer's path and watched the right mirror continuously through the turn.
2. Where should the driver have positioned the tractor, and when should he have started the turn?
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Approach from the right lane but keep the tractor as far left as the lane allows without crossing the centerline or hitting anything on the left. Pull forward farther before turning so the tractor's rear axle and the trailer's kingpin pass the corner. A useful rule is to begin the turn when the tractor's front wheels are just beyond the curb line, or when the trailer's rear axles are near the corner.
Keep speed at a walking pace, turn smoothly, and watch the trailer's right rear tires in the mirror throughout. Do not swing into the opposing lane. At a tight fuel island, it is often better to skip the turn entirely and use a pull-through lane. The driver must plan for off-tracking rather than reacting after the trailer strikes.
3. What should the driver do now, with a pickup 20 feet behind and a broken mud flap bracket?
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Stop and secure the vehicle. Do not back up with a pickup 20 feet behind unless a spotter is on the ground and the area is clear; a phone spotter is not enough. Get out and check the trailer tires, wheel, brake lines, and mud flap bracket. A broken bracket can leave sharp metal that cuts an air line or tire.
If the bracket is loose, remove it or tie it up. If a tire or wheel is damaged, do not move. Report the incident to the carrier and complete the required inspection. Backing would not fix the off-tracking problem and could create a second collision. If the trailer is undamaged, pull forward and re-approach with a wider, later turn.