Motorists are subjected to Section 5A of the Road Traffic Act. This is an offence where the individual has driven or been in charge of a motor vehicle with a concentration of specified controlled drug above specified its limit.   The Charge: The Defendant was charged with Being in Charge of a Motor Vehicle when…

In March 2017, Utah decided to lower the legal blood alcohol content (BAC) limit for drivers from 80mg per 100ml (80mg%) to 50mg% per 100ml (80mg%). This new limit, however, did not become effective until 2019. To evaluate the impact of this policy change on traffic accidents, researchers used a difference-in-differences approach, comparing data from…