Boredom on the road can lead to serious accidents as drivers become less alert or more reckless driving down straight and well lit roads. So perhaps there is some merit in the idea that more dangerous road conditions can lead to safer and more attentive driving.
Take this bridge which connects Japan’s Highway 194 with Highway 299 over the Niyodo River in Kochi Prefecture. Lacking any barriers or guard rails drivers must keep a steady wheel when crossing the Nagoya Low Water Bridge (no relation to the prefecture).