Blind-Side Dock at Night in the Rain
St. Paul distribution center, 10:30 p.m., light rain. You must put a 53-foot trailer into dock 14 on your left, a blind-side back. The lot aisle is 45 feet wide; a row of parked trailers is 12 feet from your right side. A spotter in a yellow vest stands near the dock but keeps looking at his phone. A concrete bollard is at the left rear corner of the dock, and a forklift is moving behind you. Your tractor has a 240-inch wheelbase and a sleeper; the trailer tandems are forward. The dock light is out, and your mirrors are wet. You have 20 minutes before your appointment window closes, and the next available door is occupied. You are alone in the cab; no one else can guide you.
1. Should you attempt the blind-side back as set up, or change the plan? Explain.
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Change the plan if possible. A blind-side back at night, in rain, with a wet mirror, a dead dock light, a 45-foot aisle, a bollard, and a distracted spotter stacks too many risks. Pull past the dock and set up for a sight-side back from the other direction, or ask for a different door. If a sight-side approach is impossible, make the blind-side back a deliberate, slow, multi-pull-up operation, not a race to beat the appointment window. Time pressure is the reason to slow down, not to skip the setup.
2. How should you use the spotter and your mirrors?
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Ask the spotter to put the phone away and stand where you can see them in the left mirror, on the driver's side of the trailer, never between the trailer and the dock. Agree on hand signals before you move. Use the flat and convex mirrors, roll down the window, and watch the trailer's left rear corner and the bollard. Get out and look whenever the geometry is unclear. Keep the spotter in view; if you cannot see them, stop.
3. What do you do if the spotter walks out of view or the forklift crosses behind you?
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Stop immediately. If the spotter disappears, do not continue backing on assumption; set the brake and wait or get out to look. If the forklift crosses behind, stop and sound the horn, then wait until it is clear and the driver acknowledges you. Never back over a person or a forklift because you think you have room. If the spotter cannot stay focused, request another spotter or complete the back using get-out-and-look only.