Editing Traffic enforcement camera (section)

=== United States ===
According to the 2003 [[National Cooperative Highway Research Program|NCHRP]] study on Red Light Running (RLR), "RLR automated enforcement can be an effective safety countermeasure....[I]t appears from the findings of several studies that, in general, RLR cameras can bring about a reduction in the more severe angle crashes with, at worst, a slight increase in less severe rear-end crashes.<ref>{{cite book|author=Hugh McGee|title=NCHRP Synthesis 310|publisher=National Cooperative Highway Research Program|year=2003|page=12}}</ref> However it noted that "there is not enough empirical evidence based on proper experimental design procedures to state this conclusively."

A study conducted in Alabama and published in 2016 reveals that Red Light Cameras (RLCs) seem to have a slight impact on the clearance lost time; the intersections equipped with RLCs are half a second less in use compared with those without cameras; and highway capacity manual estimates a shorter lost time and thus may overestimate the intersection's capacity.<ref name="Baratian" />

A 2024 study found that automated traffic enforcement through speed cameras led to more equitable enforcement of speeding rules than police stops. Police stops were substantially more likely to target black drivers than automated traffic cameras were.<ref name=":2" />