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Deb's picture

trash trucks

Submitted by Deb (guest) on Mon, 10/03/2011 - 6:33pm.

The big trash trucks in our city have hazard lights on the back that use this pattern. If I see one in the morning when it is barely light out, the lights seem to chase each other. If I see one when it is full daylight they seem to just move up and down. Even if I concentrate on "creating" the other pattern, it doesn't change. I wonder if someone purposely designed the lights to flash in this way to mess with people's perceptions?!

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