In fairness, all of the smart motorways schemes follow the same path as the existing roads they replaced to my knowledge. I don't think there would have been a

In fairness, all of the smart motorways schemes follow the same path as the existing roads they replaced to my knowledge. I don't think there would have been a lot of scope to improve a lot of these factors when they were upgraded. The overhead signage warning of problems ahead (until people get used to the fact that they are often left saying something which is no longer relevant), the variable speed limits and the enforcement cameras are the big differences.