Grand Streets

The widest city streets are often regionally significant but not locally integrated. Dangerously fast, yet prone to congestion, these  streets serve through-traffic at the expense of other uses and form barriers to pedestrians and cross-street traffic. Many streets were  designed based on an assumption that greater width was the only way to expand capacity for moving people. However, wider streets  are inherently less efficient per lane, so the best way to increase efficiency is to use higher occupancy  modes.

Adapted by Global Street Design Guide published by Island Press.