San Mateo County traffic flow and incidents map - how to use it to check live traffic, road conditions, and weather impacts:
A static map with traffic flow is shown first and to start using the interactive map you press the blue Load button above to go live.
In known extreme weather events or accidents, the map may still show green lines, even if lanes or the entire road are closed.
A gray Toyota Camry is involved in a collision on southbound US101 just south of Lawrence Expressway. The vehicle is drivable, and CHP has been requested to respond.
Northbound I-880 is experiencing delays due to a collision involving a metallic gray Toyota Camry and a red Toyota RAV4, blocking the center divide. Emergency services are on the scene.
Northbound I-880 near Warren Ave has two vehicles involved in a collision, with reports of a black Toyota pickup and a metallic gray Toyota Camry. Both vehicles are on the right shoulder, and emergency crews are responding.
A traffic hazard has been reported on the northbound SR-87 ramp to southbound I-280. A tow truck is en route to assist.
Two vehicles are involved in a collision on southbound SR-85 just south of Union Avenue. Both vehicles are driveable and on the right-hand shoulder.
Eastbound I580 just before Eden Canyon Road has a silver Honda Civic involved in a fire, with heavy smoke reported. Fire crews are on the scene, but no flames have been seen yet.
There is a maintenance hazard on the on-ramp from Harrison St to I-80 East. Drive carefully in this area.
Eastbound SR24 near Martin Luther King Offramp has a collision involving a white Subaru sedan and a white Toyota Tacoma, blocking the second lane. Vehicles are being relocated to clear the area.
