Tire degradation comes from heat. Going slower produces less heat and therefore less pollution. On top of that, slower speeds are better for fuel economy as you aren’t dealing with wind resistance as much. That’s why the u.s. set the national speed limit to 55 during the 70s oil crises. Of course today’s cars that use hybrid and cvt transmissions are even more efficient at slower speeds than cars from 50 years ago.
Going slower may produce less heat but does decelerating produce less heat? Some may drive slower but most will speed up and then brake before each speed bump.
When you brake the tires rubber is what actually slows the vehicle for the most part, and many may skid if they accidentally brake to hard before a speed bump, contributing to more rubber being washed away into nearby catch basins and creeks.
There’s a study that says most pollution from passenger vehicles is from tire dust.
So the repeated braking and acceleration will add even more tire dust, making it more than 3x worse?
Tire degradation comes from heat. Going slower produces less heat and therefore less pollution. On top of that, slower speeds are better for fuel economy as you aren’t dealing with wind resistance as much. That’s why the u.s. set the national speed limit to 55 during the 70s oil crises. Of course today’s cars that use hybrid and cvt transmissions are even more efficient at slower speeds than cars from 50 years ago.
…thats constant speed.
Constantly slowing and accelerating due to speed bumps is horrible for fuel efficiency.
Going slower may produce less heat but does decelerating produce less heat? Some may drive slower but most will speed up and then brake before each speed bump.
When you brake the tires rubber is what actually slows the vehicle for the most part, and many may skid if they accidentally brake to hard before a speed bump, contributing to more rubber being washed away into nearby catch basins and creeks.
A more narrow road will also cause drivers to slow down, they could put up barriers for bike lanes and repaint the lines
we could create a system where cars can link together and use a low friction guided surface that doesn’t require rubber tread.
I’ve been optimistic my whole life that cars will be banned by 2030, still not too late