anything, from another car suddenly stopping, it a construction worker in the road. all to help design the safest vehicle possible. >> the vehicle's controlling our speed and our lane position and monitoring the environment ahead. >> reporter: the test car receives wireless signals from other vehicles in the test. when the motorcycle brakes -- your foot is not on the pedal. >> not on the pedal. he has a braking event. a construction worker hidden behind the truck but he's wearing a vest that has the same technology and he's communicating his position to us as well. so when the vehicle detected a possible collision path, our vehicle automatically braked to a stop. >> reporter: this is the future of driving. virginia joins california, nevada, florida, michigan, and washington, d.c., in okaying self-driving car testing on public roads. >> you're saying it's cool because we're on a real road.