LARIMER COUNTY RURAL AREA ROAD STANDARDS

APPENDIX F – GUIDELINES FOR TRAFFIC IMPACT STUDIESF.1 PURPOSE AND OVERVIEWA Traffic Impact Study is required to analyze the effects of a proposed development or otherland use action on the transportation system in order to determine if adequate public facilitiesexist to serve the proposed development, and to clearly identify any improvements required tomitigate the impacts on the transportation system. The applicant for a development proposal orother land use action must submit a Traffic Impact Study as described herein.F.1.1 Types of Traffic Impact StudiesLarimer County may require Traffic Impact Studies as follows:1. Paving Threshold Study. The County requires a Paving Threshold Study for anyproposed development or land use action that will impact unpaved or gravelroads as described in Section F.4 below.2. Intermediate Traffic Impact Study. The County requires an Intermediate TrafficImpact Study for any proposed development or land use action that will impactpaved roads as described in Section F.5.3. Full Traffic Impact Study. The County requires a Full Traffic Impact Study for aproposed development or land use action that will have a major effect upontraffic, as described in Section F.6.4. Any proposed development or land use action which creates less than three newdwelling units or generates less than twenty-one new daily trips will not berequired to submit a traffic impact study. Such development would, however, berequired to pay transportation capital expansion fees in effect at the time.F.1.2 Responsibility and QualificationsThe responsibility for assessing the traffic impacts associated with a proposeddevelopment or other land use action rests with the Applicant. Paving Threshold andTraffic Impact Studies shall be prepared under the supervision of a professionalengineer registered in the State of Colorado with appropriate experience intransportation and traffic engineering.F.1.3 ScopingThe applicant is required to contact the Engineer to arrange for scoping of the TIS. Thepurpose of the scoping is to determine and document the parameters for the study oftraffic impacts for a specific development project. The parameters determined in thescoping represent general agreement between the County and the consulting engineer,but they may not be all inclusive. The Engineer retains the right to require any additionalinformation and / or analysis to complete an evaluation of the proposed developmentproject.It is incumbent upon the Applicant to supply a completed Transportation Impact StudyBase Assumptions Form and be prepared during scoping to discuss:1. Previous TIS prepared for the site, if any2. Location of the siteLarimer County Rural Area Road Standards Page F-1October 22, 2007