Despite the proliferation of advanced technologies, modeling the uncertainty of traffic conditions is still a challenge especially for big cities. In order to offer the most direct and efficient traffic flow, Chambersburg traffic department has planned to install fiber optic cable.

The bulk of Franklin County's four-year transportation plan includes the Bridge fixes, highway repaving and engineering for an Interstate 81 exit in Guilford Township. The county transportation committee is also seeking to improve the timing of traffic signals on the county's main corridors and unanimously adopted the plan on Wednesday. The draft plan received no public comments, according to county Senior Planner Sheri Clayton.

The plan does not have a line item for traffic signals, but there’s an apparent $2.2 million that could be used for signal improvements over the next four years.

According to Kennedy, PennDOT advertized for a consulting engineer to begin plans to build an I-81 exit at Guilford Springs Road.

Preliminary engineering will take about $6.5 million over the next four years. The $30 million construction is planned for 2019 to 2026.

Thirty-five state bridges are to be replaced or repaired under the transportation plan. Replacing the Philadelphia Avenue (U.S. 11) bridge over the Conocochegue Creek north of Chambersburg is estimated to cost $2.7 million in 2016-17.

John Kennedy, district portfolio manager for the Pennsylvania Department of Transportation said in a statement, " Fiber optic cable must be installed to make use of the latest technologies that respond to live traffic flows, We're to the point where we want to work with municipalities on signals," Kennedy said. "We have new technologies to try, but are limited. We can't put any more information through that copper wire. It would be a cost to the municipality. But, that's putting the cart before the horse."