Motorists in Pennsylvania are adjusting after the decision was made to increase the speed limit on hundreds of miles of roads. Today, drivers saw 70 mph speed limit signs being installed along the Pennsylvania Turnpike. In 2014, PennDOT and Turnpike officials got clearance to go 70 mph. They initially tested it on about 200 miles of state roads. Now, that’s expanding to cover about 1,000 miles. About 90 percent of the Pennsylvania Turnpike is also making the switch.