The North Carolina Department of Transportation is expanding its driver assistance patrols to interstate between major cities. The Incident Management Assistance Patrol, or IMAP, has increased its number of yellow trucks on areas between Charlotte and Raleigh. That includes Davidson, Randolph, and Rowan Counties along I-85. IMAP directs traffic in the event of major accidents and helps with broken down vehicles to improve congestion. Sam Whittington is the Regional Instant Management Engineer for the Triad.