Flagger Waves You onto an Occupied One-Lane Bridge
You are driving a 24-foot box truck eastbound on a two-lane rural highway in North Carolina at 50 mph. A temporary orange sign reads 'ROAD WORK 1,500 FT'; 600 feet later a second sign reads 'ONE LANE BRIDGE.' At the bridge, a flagger holds a STOP/SLOW paddle turned to STOP. The bridge is 180 feet long and 22 feet wide, with no shoulders. An opposing dump truck is already on the bridge, moving toward you at about 20 mph. A pilot car waits on the far side with yellow lights flashing. The flagger then rotates the paddle to SLOW and waves you forward while the dump truck is still on the bridge. Your truck is 8.5 feet wide. Behind you, a line of impatient cars has closed up to within 15 feet of your rear bumper. The speed limit is 50 mph, and the work zone has no reduced speed sign.
1. What should you do when the flagger rotates to SLOW and waves while the dump truck is still on the bridge? Explain.
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Do not enter the bridge. The SLOW paddle authorizes you to proceed with caution only when the way is clear; it does not reserve the bridge or override a physical obstruction. The dump truck is occupying a 22-foot-wide bridge with no shoulders. Your 8.5-foot truck plus the dump truck cannot pass safely. Stop before the bridge at a point that keeps your front bumper clear of the approach; wait until the dump truck clears. Watch the flagger for a new signal. The pilot car's flashing lights indicate the escorted movement, not permission to enter an occupied bridge. If the flagger seems to insist, use judgment: a signal cannot make an occupied narrow bridge safe. Also do not let the tailgating cars pressure you into moving.
2. Explain how the orange signs and the flagger change your speed and following-distance plan from the first warning sign to the bridge.
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Orange signs mean a work zone, so the normal 50 mph limit is a ceiling, not a target. The first sign gives you 1,500 feet at 50 mph, about 20.5 seconds, to slow, check mirrors, signal, and create space. The absence of a reduced-speed sign does not mean 50 mph is required; the basic speed law requires a speed reasonable for the work zone. Approach the flagger and bridge at a speed that lets you stop within the distance you can see, perhaps 20-25 mph, with your foot ready to brake. Keep at least three seconds behind the vehicle ahead. The cars 15 feet behind you are a hazard, but do not brake-check them; slow gradually and let them wait.
3. If the bridge were clear and the flagger showed SLOW, what would you do and what would you check before crossing?
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Proceed at walking-to-slow speed, but first verify the paddle, opposing traffic, and the pilot car's position. Check the bridge width: 22 feet total minus your 8.5-foot truck leaves 13.5 feet, or about 6.75 feet on each side, so mirrors and lane position matter. Check for workers, equipment, and overhead obstructions. Cross without stopping and without shifting gears on the bridge if possible. Once your rear bumper is clear, resume speed only when the road ahead is clear and the flagger or pilot car has released you. If any doubt remains about clearance or opposing traffic, wait.