The raceway said it will also employ a traffic manager, who will work closely with the CHP to provide real-time direction. An on-site radio station, 87.9 FM, will provide live traffic information.
More than 30 CHP officers will help manage traffic on race day.
"The CHP supports and endorses the efforts by Sonoma Raceway to help minimize the impact of traffic in and around the raceway," said CHP Sergeant Brad Bradshaw. "We feel these efforts have gone above and beyond to assist the public."
Race organizers encourage fans to take mass transit. For the second year, the NASCAR Express Train will bring 500 fans to the track from Sacramento. The SportsFan Express bus program will bring more than 1,000 fans from 27 locations around Northern California, organizers said.
Fans can also delay jumping into post-race traffic and walk around the road course after the event.
Sonoma Raceway will host NASCAR events Friday, Saturday and Sunday. The main event, the Toyota/Save Mart 350, is on Sunday. Gates open at 6 a.m. and the race starts at noon.
You can reach Staff Writer Matt Brown at 521-5206 or firstname.lastname@example.org.