The National Highway Traffic Safety Administration (NHTSA) works with state governments nationwide, including New Hampshire, to track drunk driving arrests. The data gathered paints a picture of when, where, and how New Hampshire drivers are more likely to be arrested on suspicion of driving under the influence of alcohol (DUI).
For instance, data gathered from 2000-2008 showed that the most drunk driving arrests occur in June, July, and August in New Hampshire. Police departments often decide to set up sobriety checkpoints more often during these months. Fridays and Saturdays are the most common days of the week for DUI-related arrests. Most of the New Hampshire drivers arrested on suspicion of DWI are also arrested between 8:00 p.m. and 4:00 a.m., regardless of the day of the week or the month. In contrast, less than 20 percent of all DUI arrests occur between 4:00 a.m. and noon each day.
The NHTSA and the state of New Hampshire use this information to decide when, where, and how to distribute police officers and other resources to ensure that drunk driving arrests take dangerous drivers off the roads as efficiently as possible. Unfortunately, increasing patrols to crack down on drunk driving can mean that important details, like observing drivers’ legal rights or ensuring a driver has actually violated New Hampshire law, get pushed aside.