Colorado Idle Reduction Laws and Incentives
State Laws and Regulations
Idle Reduction Requirement - Denver
Idling of any vehicle for more than 10 minutes in any one-hour period is prohibited within the city and county of Denver. Exemptions apply for the following: when ambient outside air temperatures have been less than 20 degrees Fahrenheit for the previous 24 hours; current ambient outside air temperature are less than 10 degrees Fahrenheit; emergency vehicles; vehicles engaged in traffic operations; vehicles which are being serviced; vehicles that must idle to operate auxiliary equipment; vehicles that are idle due to traffic congestion. (Reference Revised Municipal Code, City and County of Denver, Section 4-43)
