LOS ANGELES, Sept. 3 - While Carlos Sanchez, a guitarist, waits in front of Mariachi Plaza in Boyle Heights to be picked up for his next job, he likes to look at a mural behind the plaza's kiosk on First Street.
The mural, with colorful squares and spheres and scenes of local flavor, is reminiscent of the work of Mexican muralists like David Alfaro Siqueiros, but it is functional, too. It hides construction of a light-rail link that supporters in Boyle Heights and neighboring East Los Angeles say will change the face of their communities.
Boyle Heights, part of the City of Los Angeles, and East Los Angeles, an unincorporated area of Los Angeles County, have long been home to thousands of Latinos. Both communities are cut off geographically from the city's beach districts and central business areas.
The light-rail train, set to begin running in 2009, will allow passengers to get to areas throughout the county. For many low-income residents, like Mr. Sanchez, 38, who do not own cars, the train will replace bicycles, unreliable buses and costly taxis.
"I'll be using the train because it's going to be more convenient and a faster way to get to where you want to go," said Mr. Sanchez, who often car-pools to jobs with fellow musicians.
The train, named after Edward R. Roybal, who in 1949 became the first Mexican-American elected to the Los Angeles City Council, will travel six miles from the Little Tokyo/Arts District in downtown through Boyle Heights and East Los Angeles. It will link to the Los Angeles subway system on the Gold Line, which runs south from Pasadena. A one-way trip now costs $1.25.