Winter Blitz Impaired Driving Enforcement Launched Winter Blitz Impaired Driving Enforcement Launched North Forty News file photo. The Colorado Department of Transportation is working with Colorado State Patrol and local law enforcement agencies through a series of The Heat Is On DUI enforcement periods from Friday, January 15 through Monday, January 25, to keep Colorado roads safe in 2021. The Heat Is On campaign will consist of 16-high visibility DUI enforcement periods starting with the Winter Blitz DUI enforcement. A total of 92 agencies expect to boost DUI patrols during Winter Blitz as 588 arrests were made last year during the same enforcement period. “Each year, thousands of Coloradans experience the long-term shock waves from a DUI including driver’s license revocation, employment impacts, higher insurance rates, not to mention potential jail time,” said Chief Matthew Packard, Colorado State Patrol. “Our 2021 enforcement efforts will continue to include sobriety checkpoints, increased officers on duty, and concentrated patrols in high-risk areas to catch those that fail to think about the short and long-term impacts of driving while impaired,” Matthew said.