Brake Pads with Lights
I’ve never seen brake lights on a push bike before but that could be about to change with the LED brake pad light.
The new sort of bicycle brake pad incorporates a red LED so that when the brakes are applied they light up (just like on a proper vehicle). So the next time a cyclist slams the anchors on for no apparent reason you’ll now have something to aim at
Brake pad lights are available from the Swedish site Biltema, found via Smart Stuff.