Traffic in Butler should be more efficient as the city’s traffic signals have been recalibrated.

Domenic D’Andrea, the project’s manager for the Southwestern Pennsylvania Commission, said the city is one of more than 40 municipalities in its 10 county region to have traffic signal work done as part of the SINC-UP project.

D’Andrea’s crew on Wednesday completed signal upgrades on nine intersections on Main Street, as well as two intersections on Cunningham and Jefferson streets and Center Avenue.

The project is funded by a $420,000 grant administered by the Southwestern Pennsylvania Commission, working in cooperation with the state Department of Transportation, and covers three municipalities, including Butler. The city’s contribution to the project, about $40,000, was provided using funds from a state Automated Red Light Enforcement grant.

D’Andrea said the city applied for the project in 2011.

A traffic study was done during the past two years at the intersections.

The study was to better set the time in which traffic signals change, increasing the efficiency of traffic flow on Main Street. The goal of the SINC-UP is to cut the time cars spend stopped at lights by up to 17 percent.

The project added a GPS unit in the master box at the corner of Main and West Diamond streets. The unit will automatically reset all traffic signals on Main Street to be on time following any electrical outage or disruption.

Each pedestrian signal at the intersection had a countdown signal installed and was fitted with LED lights.

While adjustments were made in the calibrations of the signals, D’Andrea said pedestrians won’t need to run to cross the street.

“None of the pedestrian timers decreased,” he said. “The only real change was some small time adjustments for vehicles.”

D’Andrea said his crew will monitor the changes for the rest of the week and will listen for any public comment.

He said the commission will work with the city during the next month to hear any issues the public may have.

“Adjustments can still be made,” he said.

The SINC-UP project was designed to bunch numerous municipal traffic signal projects together to be more cost effective. It’s intention was to improve the systems the municipalities were already using.

“The program makes the best of what we have to work with,” D’Andrea said.