Abstract
We estimate the effect of the level of fines on payment compliance and revenues collected from speeding tickets. Exploiting discontinuous increases in fines at speed cutoffs and reform-induced variation in these discontinuities, we implement two complementary regression discontinuity designs.
The results consistently document small payment responses: a 10% increase in the fine (i.e., the payment obligation) induces a 1.2 percentage point decline in timely payments. The implied revenue elasticity is about 0.9.
Expressed in absolute terms, a one-dollar increase in the fine translates into a roughly 60-cent increase in payments collected within 15 days.