I am house shopping and I want to buy a house that is <1.3 miles from an elementary school, park, and grocery store. My goal is for my new home to allow my child to be able to walk/bike to school or the park while minimizing the risk of vehicular manslaughter. I figure that a traffic heat map would greatly reduce the amount of labor involved in house shopping since currently I am stuck perusing city level excel sheets in order to hopefully stumble into the relevant data (not all streets have data collected by the city).

Just had the fleeting thought that maybe there is a substantial cost to review and create enormous traffic safety research systems and the subsequent training required of law enforcement personnel and administrative staff.
In contrast to the status quo which is basically a long running experiment, I'm imagining the control condition is cars are electronically speed limited to 15 mph since there is substantial evidence that travelling at this speed reduces traffic fatalities to nearly zero.

Has anyone seen estimates of the administrative costs associated with traffic safety analysis? My first intuition is that it is trivial compared to the damage to life, limb, and property.