When cyclists used to roll up on a light, they had to dismount, hit the button on the traffic signal and wait to cross the street. Now bike riders can stop on bright green pads at seven different intersections around Denver. A heat-sensing camera detects the presence of the bike and the signal will change, giving the rider an extra few seconds to make their way across the street. The Denver Regional Council of Governments provided about $100,000 to install the cameras.