Buses like this should be fitted with accelerometers, and drivers be rewarded for good driving. Actually the same applies to ordinary buses, a careful driver makes the journey much more comfortable.
While I agree with the sentiment, it does nothing to account for all the other drivers on the road. I don't really see how this is fair to the bus driver.
That's true, but a lot can be avoided with conservative driving. Anticipating what other drivers might do is major part of the skill. Also, stopping suddenly can be a serious health risk if you're expecting the elderly to use the buses.
But I do take the point, I'm not a big fan of the overbearing tracking that you read about, for instance, in the Amazon warehouses. Especially when you're asking for skilled performance but paying unskilled wages.
Perhaps it could just be asking a percentage of drivers to take extra training, but I do think it should happen to some degree.
Do we really want to measure drivers by smoothness only, ignoring other factors like safety?
When a difficult situation on the road arises, the drivers may be less likely to hit breaks, knowing they are being constantly watched.
A better option would be to allow passengers to rate the drivers easily, Uber style. Such system would count in more factors, and (I guess) would be less likely to optimise for just one factor.