I use OsmAnd and it alerts me to pedestrian crosswalks. My wife uses google and it alerts her to speed enforcement. Interesting difference in priorities.
What are the benefits of crosswalks alerts? Usually, there are lots of signs leading to, and at the crosswalks. This is the opposite for fixed and mobile speed traps, they'd rather it be a surprise to drivers.
The benifit is adding another layer of safety to reduce risk. In the swiss cheese model of accidents, each safety measure is a layer of swiss cheese, which has holes through which accidents may go through. But if you stack up a lot of cheese, the accident has to thread a path through several different holes and that is less likely to happen.
