The Police Department will be running extra patrols on the roads through New Year’s Day, joining almost 200 other local and state law enforcement agencies taking part in the national Drive Sober or Get Pulled Over program, officials said. The initiative is funded by a federal public safety grant. Authorities said that figures show the holiday season is a particularly dangerous time for driving, since there are more impaired drivers on the roads. In 2011, police said, 114 people were killed in Massachusetts crashes that involved drivers with a blood alcohol content level of at least .08, which is considered to be impaired under state law. Federal authorities recommend that people plan ahead before drinking to avoid driving drunk. Officials said anyone who intends to drink should plan a safe way to get home before attending any festivities, which can involve designating a sober driver, using a taxi or public transportation, or calling a sober friend to pick you up. They also urged the public to inform police of drivers that appear to be impaired. For more information, visit www.mass.gov/highwaysafety. Full story for BostonGlobe.com subscribers.