How long are the white broken lines on the highway?
The answer to one of the things I have been wondering all week, via the Federal Highway Administration’s Manual on Uniform Traffic Control Devices (MUTCD), Section 3A.06:
A broken line indicates a permissive condition… Broken lines should consist of 10-foot line segments and 30-foot gaps, or dimensions in a similar ratio of line segments to gaps as appropriate for traffic speeds and need for delineation.
And on a related note, those raised bumps that are used to separate lanes in California and other warm-weather states are called “Botts’ dots,” after the Caltrans engineer who oversaw their development.
FASCINATING.
