05-13-2019, 08:29 AM
There are loads of improvements engineers have made to highways over time that improve safety. Tall wall barriers undoubtedly do that. Parclo interchanges were in part designed to reduce weaving of traffic.
Two problems that still seem pervasive, though. First, it is difficult to test improvements rigorously to see if the improvements actually improve safety. Wider lanes seem safer, but they also increase speeding and can make urban roadways far less safe for other users. Second, engineers still seem to treat other road users as an after thought and design roadways for drivers first, and then figure out how pedestrians and cyclists can fit in after.
Two problems that still seem pervasive, though. First, it is difficult to test improvements rigorously to see if the improvements actually improve safety. Wider lanes seem safer, but they also increase speeding and can make urban roadways far less safe for other users. Second, engineers still seem to treat other road users as an after thought and design roadways for drivers first, and then figure out how pedestrians and cyclists can fit in after.