Effects of a penalty point system on traffic violations

TLDR: It is concluded that the penalty point system has a significant deterring effect for drivers who are at high risk of losing their license at the next infraction.

About: This article is published in Accident Analysis & Prevention.The article was published on 2018-01-01 and is currently open access. It has received 23 citations till now.

Figures

Fig. 3. Probationary-licence drivers incurring new penalty points (or having their licence revoked) in Period 2, by number of points incurred in Period 1. Percent. Vertical lines show 95% confidence intervals.

Fig. 1. Full-licence drivers incurring new penalty points (or having their licence revoked) in Period 2, by number of points incurred in Period 1. Percent. Vertical lines show 95% confidence intervals.

Frequently asked questions

Q1. What have the authors contributed in "Effects of a penalty point system on traffic violations" ?

The authors analysed data from the Norwegian driver ’ s licence penalty point register over a three-year period, in order to investigate whether the number of incurred penalty points in a given time period can predict the probability of incurring additional points in the subsequent period. Data for all category B drivers without penalty points at the start of the study period were included in the analyses. 

Q2. What have the authors stated for future works in "Effects of a penalty point system on traffic violations" ?

In addition to receiving double penalty points, probationary-licence drivers who lose their licence have to undergo a new driving test, and their probationary-licence period is extended for another two years. Further analyses of register data for individual drivers would be an interesting topic for future research. Although not statistically significant, an indication of such an effect may be the observed tendency in the direction of a lower new point probability among drivers with more than four previously incurred points than among drivers with no points. Another question that the authors can not answer from their results is what effect the penalty point system has on drivers who lose their licence for six months as a result of incurring eight points or more.