Ponder the red-backed poison frog. In nature, red can issue a warning to predators — stay away, the aposematic message reads. On the road, red can be a warning of its own, often flashing on emergency ...

Q: A while back while traveling on Interstate 90 out of Wisconsin, a red truck with flashing strobe lights came up behind us. The lights were in the grill, not on the roof and I don’t recall the color ...

A tanker truck fleet that installed $150 blinking amber lights to the back of their trucks reported a 33.7% drop in rear-end collisions over a 31-month period, according to company officials. In ...

Q. What do the flashing blue lights off to the side of the freeway mean? They flash at the end of long poles, perhaps near construction materials. There is one at the Pacific Coast Highway exit on the ...