TOPEKA, Kan. (WIBW) - When you see the school speed limit sign and flashing light, slow down so you don’t hear a siren. “Most of the ones in the city are active from 8 a.m. to 9:30 a.m. They have ...
Traffic lights follow the same green-amber-red order during the day, but at night, some of them switch to flashing certain colors. Why does that happen?
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