Be careful with those Arduino GSM cards. As [James] reports, they may turn into fire starters. One person has reported a small explosion and fire already on the Arduino forums. Now before we go ...

You not only get safety-centric features like turn signals and brake lights, you also get a handy speedometer and odometer so you always know how far you travelled.

Essentially, it is another safety initiative that gives a visual warning of a biker braking, with LEDs tucking up the end of the handlebars. It is based on an 3-axis accelerometer board, provided by ...