Helios Bars add a variety of smart features to your bike that improve the overall biking experience. These features include: Proximity Lighting - Allow your bike to sense your presence & automatically turn on your headlight when you're near, and off when you're not. Turn Signals - Left and right blinkers keep you safe & visible on the road. GPS Tracking - Track your bike via SMS from anywhere in the US. Receive the coordinates of your bike & a Google Maps link to its location within 30 seconds of tracking.