San Francisco Municipal Transportation Agency Photo Library
At the outset of any redesign project, the project team sets forth key criteria governing the street design. These “design control” parameters critically shape decision making.
Enhancing transit function requires a proactive design approach-—the complete assemblage of the street drives how users perceive their environment, and determines street capacity. While transit vehicles present geometric challenges, “over-designing” transit facilities limits the ability to balance multiple modes and provide a safe and vibrant street. Transit design controls, like all street design controls, should always be driven by the targeted outcome and the unique issues and opportunities to increase the character and efficiency of the street.