Panels on the front and rear of vehicles filled with 2-part chemiluminescent liquid - like glow sticks.
When struck, ampoules break, liquids mix and light up bright red.
Some liquid is intentionally dispensed onto the highway to leave a visible trail.
Operates independantly of vehicle power or driver/passenger intervention.-- 8th of 7, Dec 17 2016 aside from the extreme cool factor, I do not comprehend the utility. Unless it has something to do with seeing the vehicle at night.-- beanangel, Dec 17 2016 An after market one size fits all bandolier of ampules could tied on any vehicle for the effect. ( Maybe not on the front of snowplows. )
There is likely some military surplus that could be modified to get the ball rolling.-- popbottle, Dec 17 2016 Nice. A clear, refillable bumper containing thick chemical reagents to produce a glowing mathmos type effect when bumped.-- wjt, Dec 18 2016 Spray paint canisters in bumper activated when hit. Spray a nice tint onto the attacker car.-- pashute, Dec 20 2016 random, halfbakery