Coordinating traffic signals on Cranberry’s busy roads in 2011 saved motorists about $2 million annually, according to a study by Carnegie Mellon University researchers.

“We can’t keep adding pavement,” township Manager Jerry Andree said. “We have to move traffic efficiently.”…

Coordinating the signals helps drivers in the region save about $2 annually on fuel and wear and tear on their vehicles, CMU postdoctoral researchers Yeganeh Mashayekh and Chris Hendrickson found through the university’s Traffic 21 research program. Cranberry drivers save about $600,000.