Advisory 35 on a Wet Mountain Curve
You are southbound on Arkansas Highway 7 at 55 mph, descending a wet two-lane mountain road at 4:15 p.m. A yellow diamond shows a right curve, with a rectangular plaque reading 35 MPH. Leaves and gravel have collected on the pavement. Ahead, a loaded dump truck is traveling at 30 mph. Beyond it, an orange diamond reads ROAD WORK 1/2 MILE, and a flagger stands near the shoulder. A solid yellow centerline begins 200 feet ahead. You have been stuck behind the truck for two miles and want to pass before the curve.
1. Is the 35 mph plaque a speed limit you can be ticketed for exceeding? Explain what it does and how it should affect your pass decision.
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The 35 mph plaque on a yellow warning sign is an advisory speed, not a regulatory speed limit. It tells you the speed at which the curve can ordinarily be negotiated comfortably; it does not create a separate posted limit with the same legal force as a white speed-limit sign. That does not make it unimportant. In wet conditions with leaves and gravel, 55 mph into a curve marked advisory 35 can be evidence that your speed is not reasonable for existing conditions, even if the number is advisory. The plaque should lower your speed before the curve, not give you a target to beat. Passing the truck at 55 mph just before that curve combines the advisory speed, a wet surface, and limited sight distance into an unreasonable risk.
2. Evaluate whether to pass now. Consider the solid yellow line, the truck’s speed, the work zone, and the flagger.
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Do not pass now. A solid yellow centerline on your side is a no-passing marking, and it begins before the area you would need to complete the maneuver. The truck is going only 30 mph, so a pass would require a long distance at high speed, exactly where the road curves and the surface is wet. The orange work-zone sign and the flagger add the possibility of stopped traffic, equipment, or a sudden flagging instruction beyond the truck. Even if the line were not there, the combined sight distance, surface, and work zone make the pass unsafe. The correct choice is to stay behind the truck, increase following distance, and wait for a legal passing zone with clear view and no work-zone conflict.
3. What does the orange work-zone sign add, and how should it change your expectations in the next half mile?
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The orange diamond is a warning sign, not a regulatory command, but it changes what you should expect: workers, equipment, lane shifts, reduced speeds, or a flagger controlling one lane. The plaque places that expectation within about half a mile, so you should begin slowing and scanning well before the flagger. Do not wait until you see the flagger’s sign to react. The work zone may also have a separate regulatory speed-limit sign, but even without one, the general reasonable-speed rule applies. The presence of the flagger means you may have to stop completely on a wet downgrade, so leave extra space behind the truck and avoid any passing plan that depends on clearing the truck before the work zone.