Ummmmmm, speed enforcement?
I don't think that covers what people commonly mean. "Speed enforcement" would apply whenever / where ever the LEO happens to be and doesn't include the idea of particular locations being favored by the LEOs.
Note that I don't think the non-legal usage of 'Speed Trap' includes anything about there being an element of 'unfairness' or malice. IMO it's just a location where LEOs are likely to be sitting watching traffic and the opinion on that is usually supported by many being observed and / or reported there over time.
"Hot spot"?
What is the legal meaning of a speed trap?
Is it a road that has a lower speed limit then engineeres say? ...
It actually looks more complicated than that. It *looks* like fitting the description requires both a certain set of highway descriptors and particular behavior from LEOs. IMO, my IANAL and IANALEO and <whatever> opinion, it looks like it was defined to possibly curtail some 'unfair' practices.
Here's one CVC on it:
http://www.dmv.ca.gov/pubs/vctop/d17/vc40802.htm
One purely hypothetical situation would be where a highway has a 55 mph speed limit and 'for no good reason' there's a sudden change to 35 mph (imagine something similar on I-5) and there's a LEO sitting there using radar on everyone coming by. Note that such a scenario would require a governmental entity setting that 'unusual speed limit' (as they're allowed to do within certain restrictions) and that would mean that the LEO is 'just taking advantage' of it, so in a case like that I really couldn't be upset with the LEO...
... I have looked into it before but as many people say, it seems like no matter what the cops do if you are going above the posted limit, you were speeding.
Even if the number to you is to low, its posted and thats the limit.
No matter what the cops do to catch you, in my book, unless they are busting you for only 5-7mph over they got you.
Yep, I mostly agree. Just 'mostly' 'cause IMO if you're going 1 mph over they've got you. There's no valid excuse (didn't see the sign, broken speedo, whatever). Every excuse means you were still doing something wrong (like, e.g. not paying enough attention).
For my thought of needing a new phrase, the reason is that when conversations about one thing come up they often get derailed by the valid point of improper usage of a phrase or word. Much like 'grammar enforcers', when a meta-topic is created it stops the actual on-topic conversation. It's better to find a way to circumvent it than to 'always' run up against the same wall again. (If no one sped, that would be one way to not run into the wall, but that solution still doesn't name the thing we're talking about.)