> This just encourages police to put them where they know people are more likely to violate the law, like at the bottom of hills, where there's not really a dan

> This just encourages police to put them where they know people are more likely to violate the law, like at the bottom of hills, where there's not really a danger, but it generates more revenue. Judging by the number of accidents I've seen at the bottom of hills, I'm skeptical of your statement that "there's not really a danger" there. I don't think posting up at the bottom of a hill is a revenue-generating thing, it's simply an exercise of going to where the crime happens. In this case, it's at the bottom of a hill that makes it easier for drivers to reach excessive speeds and thus are an increased danger to everyone else on the road. This is exactly where you want to deter people from behaving dangerously, and where you want to punish the people who fail to pay enough attention to avoid getting a ticket in such an obvious scenario.