SAN DIEGO -- Extra trolleys will be on hand to roll rockers to Street Scene in downtown San Diego this weekend.

The music festival takes place Friday and Saturday near the Metropolitan Transit System's headquarters on 12th & Imperial avenues. Street Scene's main gate is near PETCO Park's Home Plate Plaza, a short distance from the Trolley's Gaslamp Quarter station or the 12th and Imperial transfer station.

There will be additional trains with service running every 15 minutes on both the blue and orange lines throughout the event, according to MTS.

Detailed transit information is available at www.sdcommute.com or by calling (800) COMMUTE.