045-II Wyo. Code R. § 1.5
Posted speed limits (other than statutory speed limits) on Wyoming unpaved roads open to the public that have been established by this procedure should be documented by a Declaration of Speed Limit form similar to the form shown in Figure 1-4. A completed declaration of speed limit form is shown in Figure 1-5. Note that any speed limit change from the statutory limits shall be verified and sealed by a registered professional engineer in Wyoming. The form, with appropriate background information should be presented to the county commission where a resolution approving the proposed speed limit should be approved. The resolution number should be added to the declaration of speed limit form. The form is then returned to appropriate county officials so that the necessary signing changes can be made. Enforcement of the new speed limit cannot occur until the appropriate signs giving notice of the new speed limit have been erected.
Counties can modify this declaration form to fit their local needs. Counties should develop their own systems to record and save all relevant information associated with the speed study and the resolution.
Figure 1-4 Declaration of Speed Limit Form for Unpaved Roads
DECLARATION OF SPEED LIMIT ON UNPAVED ROADS
LOCATION:
Results of Engineering Investigation
Method Used:
Summary of Results:
Recommendations:
Approved. ____________________ ___________________________ ___________
Professional Engineer P.E. Stamp Date
ORDER TO ESTABLISH RESTRICTED SPEED ZONE
The County Commission approves changing the speed limit to miles per hour on the unpaved roadway section described above.
Resolution number: ____________________
Date: ____________________
Figure 1-5 Example of Completed Declaration of Speed Limit Form for Unpaved Roads
DECLARATION OF SPEED LIMIT ON UNPAVED ROADS
LOCATION: County Road 700, Smart County, MP 16.1 to 26.1.
Method Used:
Visual inspection and engineering judgment. Free flow spot speeds to determine 85th percentile speed and pace. Standards for establishing speed limits on unpaved Wyoming roads were followed.
Summary of Results:
The statutory speed limit is 55 mph. The 85th percentile speed is 43.9 mph with the upper bound of the pace speed at 40.4 mph. There are 6.3 access points per mile and the adjacent land-use is recreational/scenic.
Recommendations:
Because of the high number of access points and the recreational/scenic land-use, it is recommended to declare a 40 mph speed limit. Post at least two 40 mph speed limit signs at both ends of the roadway section.
Approved ____________________ ___________________________ ______________
Professional Engineer P.E. Stamp Date
ORDER TO ESTABLISH RESTRICTED SPEED ZONE
The County Commission approves changing the speed limit to 40 miles per hour on the unpaved roadway section described above.
Resolution number: 55555
Date: July 1, 2011
045-II Wyo. Code R. § 1.5