> I've never heard anything of the sort and I don't believe it at face value
Perhaps you should stop listening to propaganda from the ubranists and start digging past the images of happy smiling cyclists riding the bike lanes in perfect weather with the sun shining on them?
> that's roughly the length of a football field.
Yep. That's how bad buses are. Want another fun fact? One bus does the same amount of road damage as 1000-5000 cars. If you have a bus lane, look at it and you'll see that it is much more damaged compared to the nearby lanes, even though it carries far fewer vehicles.
> As I said, a consequence of bad infrastructure, not an inherent flaw of this mode of transportation.
Yes. A well-designed city like Houston will have enough road space so that buses are do not affect the traffic disproportionately. But then it means that such a city does not _need_ buses.
> This table lists "Coach (bus)" at 27g CO2e/passenger-km
It's a UK term for long-distance buses. Yes, they are indeed more efficient than cars. If you can get a bus to drive at freeway speeds without frequent stops, then it becomes extremely efficient.
> Additionally, carbon footprint is one small part of pollution and arguably it's not even the most important one. Ultrafine particles, PM2.5, and noise pollution matter just as much to the local population.
Ok. Let's talk about PM25. If we're talking about the _brake_ _dust_ then buses are absolutely the worst. They emit way more dust per passenger. But I don't believe that this is a problem long-term, EVs barely use frictional brakes and future EV buses should also be able to mitigate the brake wear.
For _tire_ wear, it's more complex. There are no good studies of tire wear that control for the average speed. In most studies, tire wear is simply calculated by weighing the tires and dividing the lost mass by the number of miles traveled. A few studies that tried to measure the direct particulate emissions near highway exits produced results with error bars that make them useless.
Here's a nice overview: https://www.epa.gov/sites/default/files/2020-11/documents/42...
Noise pollution is a solved problem, btw. EVs are now required to make _artificial_ noise because they are so quiet. Ditto for brake dust, regenerative braking takes care of that.