Article ; Online: Informing traffic enforcement leniency and discretion: Crash culpability and the effectiveness of written warnings versus citations.
Accident; analysis and prevention
2023 Volume 189, Page(s) 107121
Abstract: Objectives: Deterrence of risky driving behavior is important for the prevention of crashes and injuries. Traffic law enforcement is a key strategy used to decrease risky driving, but there is little evidence on the deterrent effect of issuing warnings ... ...
| Abstract | Objectives: Deterrence of risky driving behavior is important for the prevention of crashes and injuries. Traffic law enforcement is a key strategy used to decrease risky driving, but there is little evidence on the deterrent effect of issuing warnings versus citations to drivers regarding the prevention of future crashes. The purpose of this study was to 1) investigate the difference between citations and written warnings in their association with future crash culpability and 2) investigate whether drivers who were issued written warnings or citations have different associations with future crash culpability likelihood than those without prior citations or written warnings. Methods: Data for this study included Iowa Department of Transportation crash data for 2016 to 2019 linked to data from the Iowa Court Case Management System. A quasi-induced exposure method was used based on driver pairs involved in the same collision in which one driver was deemed culpable and one was non-culpable. Conditional logistic regression models were constructed to examine predictors of crash culpability. The main independent variable was traffic citation and warnings history categorized into moving warning, non-moving warning, moving citation, non-moving citation, or no citation or warning in the 30 days prior to the crash. Results: The study sample included a total of 152,986 drivers. Among drivers with moving violations, previously cited drivers were more likely to be crash culpable than previously warned drivers (OR = 1.64, 95% CI = 1.29-2.08). Drivers with prior non-moving citations were less likely to be the culpable party in a crash than a driver who had no recent warnings or citations (OR = 0.72, 95% CI = 0.58-0.89). Drivers with prior warnings (moving or non-moving) did not appreciably differ in crash culpability relative to drivers who had not received any citations or warnings in the previous 30 days. Conclusions: Drivers with prior moving citations were more likely to be culpable in a future crash than drivers with prior moving warnings, which may relate to overall driving riskiness as opposed to effectiveness of citations in deterring risky driving behaviors. Results from this study also suggest that officer discretion was being appropriately applied by citing the riskiest drivers, while giving lower risk drivers warnings. Results from this study may be useful to support strengthening of state driver improvement programming. |
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| MeSH term(s) | Humans ; Accidents, Traffic/prevention & control ; Automobile Driving ; Law Enforcement/methods ; Logistic Models ; Iowa |
| Language | English |
| Publishing date | 2023-05-28 |
| Publishing country | England |
| Document type | Journal Article |
| ZDB-ID | 210223-7 |
| ISSN | 1879-2057 ; 0001-4575 |
| ISSN (online) | 1879-2057 |
| ISSN | 0001-4575 |
| DOI | 10.1016/j.aap.2023.107121 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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