Design
Wildly Futuristic Stop Sign of the Day: A Laser-Powered Water Curtain in Sydney
The most ingenious way to stop too-tall trucks from colliding into bridges.
What we've got, when big trucks approach low overhangs, is a disaster just waiting to happen. See, for example, what happened here last year: a ton of trucks smashing into bridges and such things when their drivers don't read the height warning signs.