Chart: Police crackdowns catch few drink drivers
Crime and justice chart of the week
Police routinely breathalyse drivers they suspect have been drinking, but also carry out an annual Christmas crackdown, breath-testing more than three times as many drivers in December as in other months. However, only about 1.6% of these extra tests catch a drink driver, compared to about 14% of routine tests.
larger image | annotated R code to produce this chart
Data source: Home Office, 2019
Notes
‘Extra’ tests associated with the annual Chirstmas crackdown on drink driving were calculated as the mean number of tests conducted in December each year minus the mean number of tests conducted in other months.