Flashing 20 MPH Beacon and a Crossing Guard's Paddle
It is 7:55 a.m. on a Tuesday in October. You are southbound on a two-lane arterial beside an elementary school. A fluorescent yellow-green pentagon sign shows two children walking, and below it a rectangular sign reads '20 MPH WHEN FLASHING.' The yellow beacons are flashing. A crossing guard in an orange vest stands in the roadway near a marked crosswalk holding a stop paddle toward your direction. A line of children waits on the curb, and a parent is unloading a child from a minivan in a red zone 40 feet before the crosswalk. Your light turns green, but the crosswalk is just beyond the intersection. A cyclist is in the bike lane to your right, slightly behind your front bumper. You are late for work.
1. What speed limit applies, and does the green light change your duty to the crossing guard?
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The posted school-zone limit is 20 mph because the yellow beacons are flashing; the sign's condition is part of the regulatory message, not a suggestion. The green light gives you permission to enter the intersection, not permission to proceed through the crosswalk while a guard holds a stop paddle toward you. A crossing guard's paddle has the force of a traffic-control device: stop before the crosswalk, remain stopped until the guard lowers the paddle and the children are clear, and do not creep forward or attempt to wave the guard through. Keep the cyclist in view, because a right turn or a drift to the right could cut them off. Even after the guard releases you, proceed at a speed that lets you stop for a child who breaks from the curb. The fact that you are late is irrelevant to the legal duty.
2. How should you handle the parent unloading in the red zone and the cyclist as you approach?
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Treat the red zone as a likely source of an unpredictable child: a parent unloading may be focused on the minivan, and a child may step toward the school without looking. Do not stop in the red zone yourself, and do not enforce it by blocking or confronting the parent; your job is to create space and scan. The cyclist is in the bike lane to your right and slightly behind your front bumper, so do not turn right across the bike lane without yielding. Signal early, check the mirror and blind spot, and let the cyclist clear if your paths would cross. Maintain the 20 mph limit and cover the brake. If the parent's door or the child's movement narrows your path, stop rather than squeeze past. The correct judgment is defensive: assume the red-zone violation will produce a pedestrian, and assume the cyclist will continue straight.
3. The beacons stop flashing while the guard is still in the crosswalk. What now?
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The guard still controls the crosswalk. A stop paddle is not dependent on the beacons, and a pedestrian in the crosswalk has the right of way regardless of the flashing signal. Do not accelerate just because the beacons stopped; wait until the guard lowers the paddle, the children are on the sidewalk or curb, and the crosswalk is clear. The regulatory 20 mph condition may no longer be in effect once the beacons stop, but the posted arterial limit is an upper limit, not a command to resume it immediately. With children, a guard, and a parent nearby, a lower speed remains reasonable. Check that the cyclist has not closed the gap on your right before you move. If the guard remains in the roadway after the children pass, continue to wait for a clear signal. The safe sequence is: guard releases, crosswalk clears, mirror and blind-spot check, then smooth acceleration.