Off-Highway Vehicle (OHV) Program
The Colorado State Parks Off-Highway Vehicle (OHV) Program provides registration services for Colorado residents and permitting services for all other state residents, and safety information for all OHVs, including All-Terrain Vehicles (ATVs), Dune Buggies, Jeeps (operated off-road), three-wheelers, and dirt bikes. The OHV Program site provides law and regulation information, links to organizations and clubs, and safety information. Check out the "Where to Ride" page for links to OHV trails across Colorado.

New Sound Law
Effective July 1, 2010

What You Need to Know:

To operate an Off Highway Vehicle (OHV) in Colorado, the following sound limits must be met:

99 dB(A) if manufactured before 1/1/1998

96 dB(A) if manufactured after    1/1/1998

OHVs will be tested using the SAE J 1287 stationary 20" pipe test.

New OHVs sold in Colorado cannot exceed the 96 dB(A) sound standard (unless an OHV is designed for and used in a closed-course competition facility).

OHVs designed for and used in closed-course competition facilities may require modifications for sound and spark arrestor standards when operated outside of a closed-circuit course.

Not Sure?

Colorado State Parks, in conjunction with Stay The Trail, offer free sound testing for your OHV. Check www.staythetrail.org for more information.

Stationary Sound Test RPM Data Supplements from the Motorcycle Industry Council

1985 - 2005 MIC Stationary Sound RPM Test Supplement

2006 - 2009 MIC Stationary Sound RPM Test Supplement

For a copy of the 2006 Edition of the Stationary Sound Test Manual for Off-Highway Motorcycles and All-Terrain Vehicles (includes Test RPM data back to 1985) please call the Motorcycle Industry Council at 949-727-4211

Snowmobile Program
The Colorado State Parks Snowmobile Program provides registration services for Colorado residents and permitting services for all other state residents, and safety information for snowmobiles.  The Snowmobile Program site provides law and regulation information, links to organizations and clubs, links to event calendars, and trail conditions.  Check out the "Where to Ride" page for links to snowmobile riding areas across Colorado.

Colorado State Trails Committee
The roles of the State Trails Committee are to:

• Advise Colorado State Parks' Trails Program on strategic and policy issues
• Review trail grant procedures and funding programs
• Provide a liaison with trail user groups
• Help plan and participate in the Colorado Trails Symposium and other events

The nine Trails Committee members are volunteers, one from each of Colorado's Congressional Districts, one At-Large Representative and one GOCO Representative. They serve four-year terms and may be reappointed to a second, four-year term. Members represent a wide variety of trail interests (motorized and non-motorized) with the goal of working cooperatively for trails and greenways throughout the state.

State Trails Committee Meeting

February 19, 2010

Location to be determined

State Trails Committee Members
Please send all public comments and messages to trails@state.co.us. All comments will be provided to the State Trails Committee member(s).

District 1                   Debra Thorson,Chair and OHV Representative,
District 2                   Lee Rimel      

District 3                   Kevin Hall
District 4                   Gary Buffington, Co-Chair
District 5                   Dick Bratton
District 6                   Karen Christopherson

District 7                  John Marriott

At-Large                   Phil Chamberland, Snowmobile Representative
GOCO Representative  Karla Shriver