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nayukitoday at 6:46 AM5 repliesview on HN

If buses and cars participate in the same road traffic (i.e. the bus doesn't have dedicated lanes), then a bus trip will never be faster than a comparable car trip. This is because you have to walk to/from the bus stop at both ends of the journey, wait for a bus to show up, ride the bus and have it stop for other passengers, transfer between routes, the bus has slower acceleration and turning than a car, etc.

Think about even the most strawman trip possible: A bus rider and a car driver start exactly at the location of a bus stop, the bus shows up exactly at the start time, both contestants ride/drive straight for a few kilometres (which happens to follow exactly one bus route, without changing buses; but the bus might stop a few times along the way for other passengers), and end exactly at a bus stop. The car will win every single time.

https://en.wikipedia.org/wiki/Downs%E2%80%93Thomson_paradox , https://www.youtube.com/watch?v=RQY6WGOoYis


Replies

mitxelatoday at 11:05 AM

Caveat: the bus can be a little bit slower and still win, because you don't need to drive. Or the car can be a little bit slower and still win, because people are antisocial. When the difference is more than a little, then you're correct.

sampullmantoday at 7:07 AM

It's good to have dedicated bus lanes, but the point of a bus isn't to get from point A to point B faster than a car.

It's a part of a transit ecosystem that makes it possible to survive without a car. It fills in the the gaps where it's not economical to add train/metro lines.

miki123211today at 7:38 AM

Except that many buses broadcast their location, and many cities prioritize green lights for buses over cars.

So the car might need to stop on red multiple times (unless following a bus), while the bus will have most lights automatically turn green in front of it.

paavopetoday at 7:45 AM

Yeah, the car will be faster, unless there are accommodations that benefit the bus only (like dedicated lanes). But the bus doesn’t have to be _faster_ to be viable to many people: there are other things going for the bus like not having to park, often being cheaper especially if it allows you to not own a car, etc. etc.

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