Flashing Yellow, Wet Cones, and a Backing Dump Truck
It is 9:40 p.m. and raining steadily. You are driving a 2015 sedan on a two-lane state route posted 45 mph. Ahead, a temporary work zone has shifted your lane about 8 feet to the left. The permanent signal is dark, but a portable signal shows a flashing yellow light for your direction and a flashing red light for the cross street. A flagger in a rain suit holds a SLOW paddle in one hand and waves you forward with the other. A dump truck is backing out of the work area toward the intersection, and its white reverse lights are on. Your lane is blocked by cones about 60 feet ahead. The work-zone sign says 35 mph. Your wipers are on high, and road spray reduces visibility to about 300 feet. The car behind you is close. What do you do?
1. What does the flashing yellow signal mean for your movement, and does the flagger's wave give you the right of way?
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A flashing yellow means slow down and proceed with caution; it is not a protected green. Cross traffic facing flashing red must stop and then yield, but you still must yield to any vehicle or pedestrian already in the intersection. A flagger's wave is an instruction to move, not a guarantee that the path is clear. In a work zone the flagger controls traffic, but the flagger may be waving you around the cones while the backing dump truck is still moving. Treat the wave as permission to proceed only after you have checked the truck, the cones, and the cross street. If the truck's reverse lights are on, wait; do not assume the flagger has stopped it.
2. Describe your speed and lane position as you approach the cones, and what you should do about the close car behind.
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Slow early and smoothly to about 15-20 mph, well below the 35-mph work-zone limit, because the wet road, the 300-foot visibility, and the 60-foot cone taper leave little margin. Stay centered in the shifted lane and do not use the soft shoulder. If the car behind is close, brake gently and early rather than late and hard; a sudden stop could cause a rear-end crash. Increase the gap ahead so you can stop without slamming the brakes. After the work zone, if the tailgater is still there, pull over safely and let it pass rather than speeding up.
3. What is the correct sequence if the dump truck keeps backing while the flagger waves?
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Stop before the cones at a distance that leaves an escape path. Do not enter the intersection or cross the cone line. A short horn tap and a headlight flash can alert the truck driver, but avoid a long blast that could confuse other workers. Make eye contact with the flagger and point toward the truck if needed. Wait until the truck stops or clears the lane. If the flagger keeps waving, proceed only at a crawl after the path is clear; safety overrides the wave. Then scan for workers and cross traffic and continue below the posted work-zone speed.