Speeding is not rejection of the opinion of experts. Speed limits are normally set low to appease the locals, who get to vote and who care most about one parti

Speeding is not rejection of the opinion of experts. Speed limits are normally set low to appease the locals, who get to vote and who care most about one particular place, rather than those passing through. It's a NIMBY problem. Most of us want to go places quickly, but don't want fast/dense traffic through our own neighborhood. We also don't get bothered when the local cops earn a living from ticketing people from out of town. Those out-of-town people of course don't get a say in local policy, just as we don't get a say in the fact that we get ticketed in the other towns.