Complementing the [NaviGAtor] system is GDOT's network of highway emergency response operators (HERO). Driving large yellow trucks, these specially trained personnel quickly deal with wrecks and disabled vehicle incidents to minimize their impact on traffic flow. When not dealing with traffic emergencies, HERO units assist stranded motorists. As of 2007, there were about ninety HERO trucks, and the average response time to incidents was eight minutes. How does the HERO program protect drivers? Check all that apply.

It provides emergency medical help.
It directs traffic at busy intersections.
It transports stranded drivers to safety.
It cleans up after automobile accidents.
It removes abandoned cars from the road.
It investigates car accidents and drunk driving incidents.