What actually improved about the 38? They moved the stops to the other side of the intersection, which saves maybe 1 minute along the entire route.
- Stops moving after the light mean Transit Signal Priority works better. GPS on the bus can "hold" the green light for longer - https://www.sfmta.com/blog/green-lights-muni
- Red painted lanes decrease private car use in bus lane, so bus can go faster
- Speeding fell by 80%, so fewer accidents mean transit is more reliable
There have been a few different projects on different sections of Geary over the years. The bus now runs 10-20% faster depending on direction and variability decreased by 25-40%.
Check out pages 15-19 of https://www.sfmta.com/sites/default/files/reports-and-docume...