I think this is great as long as the speed limits are set correctly. What I worry would happen is that the speed limits would intentionally be set low to maximize revenue from the speed enforcement system.
On my way to work there is a long stretch of road with great visibility, two lanes in each direction, physical separation between directions, very wide shoulders with virtually zero pedestrian traffic, but the speed limit is 50km/hr. Nobody drives 50 on that road. The traffic generally flows at 70. Similarly there are many semi-industrial areas with wide roads, no traffic, few pedestrians with a 50km/hr limit. We also have highways with 80km/hr limits where traffic generally flows (safely) at 90-100.
Guess what, all those places are where police hangs out looking for speeders.
Contrast that with small streets in dense urban or suburban areas where despite the limit being 50 most people drive closer to 40. Or when it's foggy or raining heavily and you want to drive slower on the highway than the speed limit.
That said there is a question of balancing the somewhat improved safety of lower speeds to the improved efficiency of driving a bit faster. I'm not sure how you balance that. There are other options like moving people to mass transit or closing some city streets to car traffic completely.
On my way to work there is a long stretch of road with great visibility, two lanes in each direction, physical separation between directions, very wide shoulders with virtually zero pedestrian traffic, but the speed limit is 50km/hr. Nobody drives 50 on that road. The traffic generally flows at 70. Similarly there are many semi-industrial areas with wide roads, no traffic, few pedestrians with a 50km/hr limit. We also have highways with 80km/hr limits where traffic generally flows (safely) at 90-100.
Guess what, all those places are where police hangs out looking for speeders.
Contrast that with small streets in dense urban or suburban areas where despite the limit being 50 most people drive closer to 40. Or when it's foggy or raining heavily and you want to drive slower on the highway than the speed limit.
That said there is a question of balancing the somewhat improved safety of lower speeds to the improved efficiency of driving a bit faster. I'm not sure how you balance that. There are other options like moving people to mass transit or closing some city streets to car traffic completely.