SAN LUIS OBISPO, Calif. -- Yet another fire has broken out at the bottom of the Cuesta Grade near San Luis Obispo.
CAL FIRE says it has burned about ten acres and is at 85% contained.
Firefighters say it was caused by a vehicle exhaust.
They say this is the fourth to fifth vehicle-related fire at the Cuesta Grade this year.
"Most of them have been vehicle-related," says Phill Veneris of CAL FIRE. "We have unusually large grass crop right now and it's very, very dry so we need to be very careful when we're out with vehicles near vegetation."
Along with two hand crews on the ground, a bulldozer, five engines, three aircraft and a helicopter, CAL FIRE had to request five more engines.
A total of 75 firefighters were on scene.
CAL FIRE says drivers need to make sure to maintain their vehicles to prevent accident fires.