This question comes up frequently: “Should I install one of those kits that converts turn signals to turn on with the brake lights?” In the absence of scientific evidence or studies on how vehicles ...

On the rear light bar, there is a headphone jack that allows an MP3 player to be plugged into. The audio signals travel up the same CAT5 cord used for the turn and brake signals.

Here’s another Flora Arduino based project from [Becky Stern]. It’s a backpack with brake lights and turn signals for use when motorcycling, but it should work just as well for bicyclis… ...