A Pennsylvania lawmaker introduced legislation to regulate driverless vehicles on the state’s roads and the Department of Transportation unveiled a task force on the technology, steps to help Pittsburgh’s Smart City Challenge application. The developments were announced Wednesday at a conference at Carnegie Mellon University, one of the centers of autonomous vehicle technology through innovation by CMU and ride-sharing company Uber Technologies, which has opened a research center in the Strip District and is considering using the Almono redevelopment for testing. CMU is a recognized leader in autonomous vehicle development for the past 30 years and has a driverless 2011 Cadillac SRX that cruises at 70 mph.