Wednesday evening, SPUR, the San Francisco Bay Area Planning and Urban Research Association, sponsored a talk entitled “Reconsidering Transportation to Create Better Urban Spaces” at their new downtown Oakland location. The talk focused on the history and damage done by the almost mindless adherence over the years to Level of Service (LOS) on urban spaces throughout California.
“We’re wearing black,” joked Jeff Tumlin, Principal and Director of Strategy with Nelson\Nygaard, “because we’re talking about the death of LOS.” LOS, for Streetsblog readers who might not be aware, is a way to measure traffic impacts of development projects that made its way into California environmental law. Although ostensibly designed to protect the environment, most livable streets advocates blame it for destroying urban spaces and actually making traffic and air pollution far worse.
Tumlin explained that LOS wasn’t originally part of the California Environmental Quality Act (CEQA). “It was something the courts came up with,” he said. “They fixated on this single metric that measures the average seconds of delay that a car experiences—just in the peak fifteen minutes of the peak hour.”
In other words, if an intersection is all but unused, but analysis shows that a project would cause delay during the most congested fifteen minutes of the busiest hour of the day, the project would have to do something to mitigate that delay—typically, widen the nearby intersection. The result is well known to livable streets advocates—the state is now littered with streets that are wide and unwalkable. Meanwhile, thanks to induced demand, traffic has only gotten progressively worse. Read more…