Vancouver: Another day on the route 20
May 25, 2016
3 bus 20 in a row, a typical bus bunching happening on Victoria#54th
Reliability on the route 20 is a huge issue. Its lack of reliability stem essentially of its Hasting and Commercial Drive segment. Those segments are also the most detrimental to the speed of transit in this corridor. both speed and reliability are very signifcant factors affecting both the transit attractiveness and efficiency.
The average bus 20 speed is 14.36km/h [1′, but in practice most of the riders will experiment a significantly lower average speed on the route busiest section. Below is the speed map for the bus 20 on an average weekday.
bus 20 (to Downtown) speed map on a weekday as computed from 
The horizontal axis represents the time of the day, the vertical axis, the location on the corridor, while the color represents the speed. (see also speed map for the SB direction
 Translink GTFS data for weekday September 2014