The Traffic Impact Study and Traffic Impact Fees

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by Timothy T. Jackson, Glatting Lopez Kercher Anglin Inc, Orlando, United States,

Document Type: Proceeding Paper

Part of: Site Impact Traffic Assessment: Problems and Solutions

Abstract: The Traffic Impact Study (TIS) identifies roadway improvements, and roadway improvement costs, which are required to adequately serve total traffic volumes after completion of a particular land development project. These total volumes include traffic attributable to existing development, traffic attributable to the proposed new project, and traffic attributable to other new growth and development anticipated to occur before the project is completed. Therefore, only a proportionate share of the cost of roadway improvements identified in the TIS are reasonably related to the new project. Transportation impact fee ordinances are designed to assess each new development project a proportionate share of the cost of roadway improvements reasonably related to the project. These ordinances usually include a standard fee schedule for each land use type, but also provide for calculation of an independent impact fee assessment based on the unique traffic characteristics of a specific project. The most appropriate method of using the TIS to calculate the proportionate share cost of roadway improvements is such an independent impact fee assessment. In communities which have not adopted a transportation impact fee ordinance, a standards-driven proportionate share formula is the most appropriate, and technically sound method of calculating the proportionate share cost of roadway improvements, using the data and analysis included in the TIS.

Subject Headings: Traffic analysis | Traffic volume | Fees | Highways and roads | Traffic models | Traffic surveys | Traffic signals | Construction costs |

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