LOS ANGELES (KTLA) -- Three members of a rock band who blocked traffic for nearly two hours on the 101 Freeway in Hollywood two years ago pleaded no contest Monday to felony conspiracy and three misdemeanor charges.

Prosecutors say Christopher Roy Wright, 33, David Paul Hale, 31, and Keith R. Yackey, 32, climbed atop a truck that stopped on U.S. 101 near Sunset Boulevard last Oct. 12.

They performed a song called "Traffic Jam 101" before they were arrested.

The judge placed each on three years formal probation, ordered each perform 35 days of community service and scheduled a restitution hearing for Jan. 25, 2013.

The band, known as the "Imperial Stars, " describes itself as a "hard core hip hop band" from Orange County.

The stunt blocked four lanes for several hours, creating a mile-long jam.

They claim the performance was aimed at raising awareness for homeless children.

A banner on the truck read, "Over 1.5 million homeless children in the USA. What are we doing?"

The band claims all the proceeds from their newest single will go toward helping homeless kids.

The band members could have faced up to three years in prison if convicted.