The San Francisco Board of Supervisors on Tuesday voted to deny an appeal of a San Francisco Municipal Transportation Agency pilot program slated to start July 1.
The 18-month program will charge private shuttles $1 per stop to use designated San Francisco Municipal Railway stops.
Opponents of the pilot program appealed the planning process after the SFMTA board of directors approved the program in January with a California Environmental Quality Act exemption.
The appellants, including members of Service Employees International Union Local 1021, affordable housing advocates and other community activists, are calling for an environmental review to study the impact of the new shuttle program.
Supporters of the review said the diesel emissions and pedestrian safety risks have environmental impacts. They also said rising rents near shuttle stops and delayed Muni buses are social impacts.
But supporters of the program said putting brakes on the shuttle program will cause another environmental impact: more traffic and pollution.
City leaders said at least 1,000 workers ride the Google buses from San Francisco to work on the Peninsula daily.
Meanwhile, a protest of about 20 to 30 people blocked a private shuttle bus at 24th and Valencia streets prior to Tuesday's meeting. No one was arrested or injured during the brief protest.
NBC Bay Area's Jean Elle contributed to this report.