Based in Emeryville, California, Revolights is an innovative company changing the way bikes are illuminated and protected on the streets. Their most versatile design, the Arc, is a wheel-mounted light that makes bicycles more visible and paths easier to see at night. The Arc can be installed on the front or back wheel as a headlight or a tail light. Either way, its USB-chargeable LED “smart” rings spin ‘round and ‘round, providing 360 degrees of illumination. The Arc also functions as an automatic brake light. Its speed sensors track how fast one’s traveling so that, depending on the mode, the LEDs brighten or blink more rapidly to signal deceleration. The Arc itself attaches to the wheel rim, securing below the brake calipers with rim clips. Once mounted, the design is permanently riveted into the fender and cannot be stolen without the whole fender being removed. An “anti-theft” investment in cyclist safety, the Arc is a bright idea for anyone pedaling after dark. Support the Revolights on Kickstarter to lock into the pre-sale price of $69.