You should look into why cities use smooth asphalt over concert which would be significantly less maintenance.
Cars driving around create a lot of noise. Driving on a rough surface like concert, let alone a bumpy surface like brick or cobblestone, creates a ton of additional noise. Another hint is that gravel driveways are cheap, but they also make it very very easy to hear when someone is pulling up to your house.
Anyone living next to these roads _might_ have some cars go a bit slower, but at the cost of not being able to sleep at night.
Then there is the fact that America loves big cars with big off roading wheels. I think the assumption here is that most speeders would be discouraged by the uncomfortable ride, however I think reality is that the people in that hummer going 90mph on a city street just won't care about a rougher ride.
Cars driving around create a lot of noise. Driving on a rough surface like concert, let alone a bumpy surface like brick or cobblestone, creates a ton of additional noise. Another hint is that gravel driveways are cheap, but they also make it very very easy to hear when someone is pulling up to your house.
Anyone living next to these roads _might_ have some cars go a bit slower, but at the cost of not being able to sleep at night.
Then there is the fact that America loves big cars with big off roading wheels. I think the assumption here is that most speeders would be discouraged by the uncomfortable ride, however I think reality is that the people in that hummer going 90mph on a city street just won't care about a rougher ride.