From the article: > Modular materials also tend to reduce traffic speeds, since [they] create a surface that is not as seamless as fresh asphalt or concrete. I

From the article: > Modular materials also tend to reduce traffic speeds, since [they] create a surface that is not as seamless as fresh asphalt or concrete. In one brick installation project, the average speed dropped from 41 mph to 29 mph. This represents 30% decrease in speed, and the risk of death when a pedestrian is hit by a vehicle is approximately 4x higher at 40 mph versus at 30 mph. I mean ... this pretty much says it all? For the vast majority of roads this is simply unacceptable. The main reason asphalt is used is that during its effective lifetime, the road surface is smooth and even.