UPDATE: At about 1:25 p.m. PG&E said power has been restored to all but 244 customers in San Luis Obispo.
UPDATE: At about 11:15 a.m., San Luis Obispo fire crews were dispatched to the area to find a single occupant inside the truck with a live power line resting on top, said Deputy Fire Chief Jeff Gator.
The driver was not hurt in the crash, Gator said.
As of 12:45 p.m., Pacific Gas & Electric Co. workers were on the scene to cut power to the line before emergency crews can release him from the truck.
Motorists are being restricted in the area of Johnson and Laurel Lane, contributing to a slight backup in traffic.
Two fire engines and a fire battalion remained at the scene, and members of the Police Department are conducting traffic control. Motorists are asked to use an alternate route if possible.
About 3,320 customers are without power in southern San Luis Obispo, according to Pacific Gas and Electric Co.
The cause is a downed power line on a trash truck, the San Luis Obispo Fire Department says. No injuries have been reported. A fire crew and PG&E are at the scene.
The outage, which was reported at about 11:14 a.m. on Friday, is affecting customers north of Prado Road and just south of Higuera Street, according to a PG&E Outage Map. Power is expected to be restored by about 1:15 p.m.
A garbage truck driver is currently trapped inside his vehicle after striking a power pole at the corner of Southwood and Greenwood in San Luis Obispo.
Reporter Matt Fountain contributed to this story.