CMU professor Raj Rajkumar said, self-driving vehicles are safe on highways but need improvements for crowded neighborhood streets. Limitations include increased cost of as much as $15,000; handling weather conditions; and reacting to unexpected events. “It is not able to get from home to work, but can be used on the highway,” he said. “In about 10 years or so, you will be able to get from home to work.” To make sure state laws keep up with technology and the technology follows safety standards, state Department of Transportation Secretary Leslie S. Richards on Wednesday announced bipartisan legislation in Harrisburg and creation of a task force to oversee technology developments.