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Carole Walker, RMIIA

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7951 E. Maplewood Avenue, Suite 110
Greenwood Village, Colorado 80111
Serving Colorado, New Mexico, Utah & Wyoming

Contact: Carole Walker, Executive Director
303-790-0216 or toll free 800-355-9524

September 1 marks the reinstatement of Wildlife Zones and lowered nighttime speed limits on some key corridors

September 1, 2011 – Today, roadside reminders are back in the form of lowered nighttime speed limits and/or doubled fines for nighttime speeding within designated Wildlife Zones. Motorists will see more roadside reminders to slow down and watch for wildlife in specifically designated corridors.

Legislation sponsored by Senator Gail Schwartz and former Representative Kathleen Curry (and several non-governmental organizations) in 2010 called for lowered nighttime speeds and doubled fines in designated "wildlife crossing zones" from September 1 through April 30. (Signs along Region 5 highways, however, carry the enforcement through May, as data show a major spring migration across this corridor during the first two weeks of May.) There are no fines for hitting an animal.

Per the HB 1238 (2010), the Colorado Department of Transportation identified 100 miles of wildlife crossing zones where lowered nighttime speed enforcement was feasible. CDOT set signs within the zones (see chart, below) and will continue to collect data and report back on results of this pilot initiative in the spring of 2012. CDOT worked closely with representatives of the Colorado State Patrol and the (newly named) Division of Parks and Wildlife—using several comprehensive data sources—to identify these zones.

Nighttime speeds were reduced to 55 mph only where the current speeds are posted at 60 or 65 mph. The nighttime speed is enforced with double fines between the hours of 5 P.M. and 7 A.M. While it is not yet dark at 5 P.M., the timeframe was selected based on the extended dusk to dawn hours throughout the migration season, reflecting the time of day during which the majority of wildlife-vehicle collisions take place. Some sections of highway (see chart) were signed "WILDLIFE CORRIDOR" but the nighttime speed has remained the same—fines will still be doubled for speeding in ALL zones, however.

"The CSP will continue our enforcement efforts in the wildlife zones, and the good news after 15 months is that we are seeing a reduction in crashes for some areas," Colorado State Patrol (Troop 4C, Glenwood) Captain Rich Duran said. "This could be directly attributed to the signage and speed reductions, but we'll have to review all data at the end of this pilot initiative to know for sure."

Wildlife-vehicle collisions happen year round, 24/7. However, there is always an increase during migration season, and particularly during the hours between dusk and dawn. These collisions are not only a matter of safety, but can be quite costly as well.

"The insurance industry pays out nearly $1.1 billion a year in claims for all wildlife-vehicle collisions nationwide; a big portion of that is in the fall, and in particular November, when these types of collisions increase," Carole Walker, Executive Director of the Rocky Mountain Insurance Information Association said. "The average property damage cost of animal-vehicle collisions is estimated at $3,103, up 1.7 percent from a year ago."

During wildlife migration season, motorists are urged to follow these important safety tips:

  1. Slow down and stay alert, especially through these and other signed wildlife crossing areas;
  2. Scan the roadway and roadsides ahead for signs of movement; watch for shining eyes of animals that reflect car headlights at night;
  3. Do not swerve but rather brake gradually, maintaining control of the vehicle.

Signs are posted in the following zones, denoting the enforcement period of: September through April,* 5 P.M. to 7 A.M. Lowered nighttime speed limit signs are also posted in locations indicated below. (*In CDOT's Region 5—southwest/south-central Colorado, the signs extend the enforcement period through May.)

CDOT Region Hwy Begin MP End MP Zone Location Reduced Nighttime Speed?
1 SH 9 108 126 North of I-70 No
3 SH 9 126 136.37 South of Kremmling to Green
Mtn. Reservoir
Yes, 65 to 55
3 SH 13 28 38.81 North of Rifle Yes, 65 to 55
3 SH 13 58 68 North of Meeker No
3 SH 13 68 88 North of Meeker Yes, 65 to 55
5 US 24 202 210 North of Buena Vista towards Granite Yes, 65 to 55
4 US 36 25 33 Between Boulder and Lyons Yes 60 to 55
3 US 40 93 103 East of Craig No
3 US 50 132.19 136.18 At Blue Mesa Reservoir Yes, 65 to 55
3 SH 82 31 36 West of Aspen No
5 US 160* 113 121 East of Bayfield to west Piedra River No
5 US 160* 121 132 Piedra River to west of Pagosa Yes, 60 to 55
5 US 550* 26 35 North of Durango to Honeyville Yes; 60 to 55
3 & 5 US 550* 114 125 N. of Ridgway to S. of Montrose Yes, 60 to 55


Rocky Mountain Insurance Information Association is a non-profit consumer information organization. Affiliated with the Insurance Information Institute, RMIIA has been serving consumers and the media since 1952.

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