The recent bus trip I took from home to work modifies my previous linear regression calculations of a "travel time equation". The "real" bus trip had modest walking and very little waiting
For travel distances expressed in great circle miles:
Auto: 1.41 minutes/mile + 12.09 minutes =
Samtrans bus: 4.20 minutes/mile + 24.51 minutes =
The 3-16-2010 journey has these calculated and real travel times
Auto, calculated = 35.3 min. Real = 45 min
Bus, calculated = 93.52 min. Real = 80 min.