Earlier quoted context omitted.
At least in San Francisco, there's far more of them. The extra wear and tear on the roads ends up as a road repair bill that taxpayers pick up. If the TNCs were a 1:1 replacement for traditional taxis, this wouldn't be a legitimate argument, but the evidence out there suggests that TNCs have grown the size of the car hail market at the expense of off-peak transit, so the TNCs really are putting more cars on the stree…
Road wear is exponentially proportional to vehicle weight. Almost all of the wear is caused by large commercial trucks and other heavy vehicles such as buses. Passenger cars cause very little road wear. TNC drivers are mostly using lighter vehicles. https://www.vabike.org/vehicle-weight-and-road-damage/
In San Francisco, the Treasurer estimated 45,000 TNC vehicles in operation compared to just 1,800 taxis. That's an enormous increase in car hail traffic, and one that I claim has a substantial maintenance impact absent evidence to the contrary.
http://www.sfexaminer.com/45000-uber-lyft-drivers-may-now-op...