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 (JEL H27, H26, K42).

中文翻译：

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罚款、拒付和收入：超速罚单的证据

我们估计罚款水平对支付合规性和超速罚单收入的影响。利用限速时罚款的不连续增加以及改革引起的这些不连续性的变化，我们实施了两种互补的回归不连续性设计。结果一致记录了小额付款反应：罚款（即付款义务）增加 10% 会导致及时付款减少 1.2 个百分点。隐含收入弹性约为0.9。以绝对值表示，罚款增加 1 美元意味着 15 天内收取的付款增加约 60 美分（JEL H27、H26、K42）。