> Lack of predictability can be a feature, at least according to Hans Monderman, famous Dutch traffic engineer. He believed drivers become more alert and cautio

> Lack of predictability can be a feature, at least according to Hans Monderman, famous Dutch traffic engineer. He believed drivers become more alert and cautious when there’s more uncertainty on the road. I think lack of certainty and lack of predictability are very different concepts, and you want the former but not the latter. Lack of certainty means you don’t know what’s going to happen because you have blind corners or obstacles (e.g. trees, planters), this requires paying attention and leads to slowdowns because the driver is not confident. Lack of predictability is its brain-damaged cousin, it’s a drunk driver or a dump truck with an open gate.