In this era, without any cameras or networks, it is still pretty easy to flee from a traffic accident once it happens.
Unless someone crashes into a person in broad daylight, it's very difficult to find the culprit a few hours after the traffic accident occurs.
Spain's approach is to dispatch police to man intersections with heavy foot traffic, making it easier to catch the culprit right after a traffic accident happens.
The police stationed at these intersections or other places to assist with city traffic management have now become independent from the security department and are under the jurisdiction of each city's management.
They also have a brand-new name, called city traffic police, which is the precursor to what we now know as traffic police.
Because Spain does not prohibit firearms, even city traffic police are equipped with firearms.
