As you approach the intersection, the traffic light above flashes yellow and you softly ease your foot onto the brake, coming to a nice, easy stop.

FORBES: She Negotiates Oscar Season: One Powerful Film You Should Know About

When a GPS-equipped bus approaches an intersection, it can, as before, take over the intersection's traffic light, but the computer can also calculate its expected time of arrival and decide either to extend a green light or shorten a red light.

FORBES: Greening the Traffic Lights

As the traffic light at the intersection turned green, Francis stepped up to the crowd, grasping outstretched hands.

NPR: Pope Wades Into Crowd Before 1st Window Appearance