By Catherine Girardeau

Let’s face it: Solo car commuters increase both traffic congestion and a city’s carbon footprint.

In San Francisco, those gas-hogging lone drivers soon will be get a clear message to switch to greener forms of transportation, such as buses, train transit and van pools. Earlier this month, the city preliminarily approved a commuter measure requiring medium- and large-size city employers to promote — or even pay for — public transit or vanpools for their commuting employees.

It’s likely that many more American cities will follow San Francisco’s lead, particularly those cities that have signed on to the U.S. Mayors Climate Protection Agreement (USCPA), and pledged to reduce global warming pollution in their cities by 7 percent below 1990 levels by the year 2012. They will likely be scrambling to usher commuters from their cars and SUV’s and onto mass transit lines, an immediate and proven way of reducing urban smog.

San Francisco Mayor Gavin Newsom was an early adopter of the USCPA and the city has an ambitious climate action plan, so it’s no surprise that on August 5, the San Francisco Board of Supervisors unanimously approved a commuter measure that would require many city employers to promote public transit or vanpools for their commuting employees. The Commuter Benefits ordinance, introduced by Supervisor Ross Mirkarimi, would give San Francisco employers with more than 20 workers three options: pay for employees’ transit passes or vanpools; provide door-to-door shuttle or vanpools, or tap into the federal Commuter Checks program, which allows employees to create pretax commuter accounts.

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