> This suggests to me that to make roads safer, we might want to design them so that drivers feel they need to drive slower and more safely. Narrow the lanes wh

> This suggests to me that to make roads safer, we might want to design them so that drivers feel they need to drive slower and more safely. Narrow the lanes where they are too wide anecdote about the opposite happening: There is the I90 tunnel in Seattle which I use very often. Some passages have 2 lanes, super narrow, no shoulder, nothing. Looks like this: https://goo.gl/maps/DzvhWZAoD5AkRVwA9 https://goo.gl/maps/DzvhWZAoD5AkRVwA9 You won't believe how fast people are going through that. Also, almost every time I get tailgated and I'm frankly amazed there hasn't been any major accidents in that tunnel considering how close people are driving (no following distance). Just yesterday I was tailgated by somebody on their phone (I could see the screen reflected in his face while he was texting). I don't want to imagine how an accident would look like in that tunnel. Honestly, a fender bender can become catastrophic before you realize what happened. Now if you mean 'narrowing' roads then probably yeah. Take a wide-ass lane and suddenly make it narrow (so that people using it every day are 'surprised' and they're more careful) and I could agree with you.