This morning, I was taking a MUNI bus that travels across the freeway to reach downtown San Francisco. Stuck in the morning traffic, I noticed a shiny panel on top of a Call-Box on the side of the road. It was a solar panel! How awesome is that?

Solar panels atop a 14-foot pole recharge the batteries that power the wireless cellular telephone in each call box. Also built into the equipment is a detection system that notifies the call box maintenance contractor if a unit fails or is vandalized.

Metropolitan Transportation Commission

These type of things the government does under the radar should be on the news more often.