drum118
Superstar
Buses shouldn't run ahead of schedule and a number of systems enforce it, while other talk from both sides of their mouth on it. To some it maybe fine with service 10 minutes or lest, but a bitch when service is every 30 minutes. There are drivers who run hot so they can miss X stop or stops for various reasons like school kids. Then some runs/routes have too much time built into the schedule as well drivers with heavy foot.Gonna throw in here, that the TTC's concept of schedule management is also silly +1, -5 (up to 1 minute early and 5 minutes late) reads as acceptable performance.
On routes with sub 10M headways, it may be possible for 2 buses to operate as a pair and the TTC would see nothing wrong w/that.
+1 is fine; but historically the TTC had used +3/-3.
Byford rightly noted there is no excuse for leaving a stop that early.
But apparently felt an obligation (contractual or otherwise) to retain 6 total minutes of flex.
The standard, IF one is using schedule to measure against should be +1/-3
That would allow for better service reliability, and less bunching.
Providing it were enforced.
But, really, on most busier routes, they need to shift to headway management, rather than schedule adherence.
As for being late is something that can't be easy fix as it can be caused by a number of things from traffic, riders taking too long to get on/off, drivers being Sunday driver, accidents, not enough time built in, drivers running hot in front of them causing more riders to get on.
A good number of systems are 0 -3. 0 -5.
Mississauga is supposed to have 0 -3, yet on the posted schedule and website, it states riders must be at the stop 5 minutes before the schedule time. Done this way to deal with buses running hot to the point the bus has already past the stop by almost 10 minutes. Very few drivers obey the school zone or streets with lower speed limit to the point they are 10-30 km over the limit. Then you have some drivers showing up 10 minutes late as been the first bus of the day with very few riders.
Look at Steve Munro data for routes as it all over the place, but unless you are on vehicles to see what really taking place along the route, its a guess game. I have seen route data for a few system for arriving at X point and again all over the place.
Traffic is the number one issues to cause schedules to be skew.