A transportation impact study (TIS) may be required by the City of Claremont for any development or property that experiences a change in zoning classification after the effective date of this chapter and is projected to generate one thousand (1,000) daily trips. A TIS shall be required for all development that experiences a change in zoning classification after the effective date of this chapter and is projected to generate one thousand five hundred (1,500) daily trips. A TIS may be required by the City of Claremont for any redevelopment or change in use of an existing occupied development that has experienced a change in zoning classification after the effective date of this chapter that would generate one thousand (1,000) additional daily trips, and shall be required when the subject development is expected to generate one thousand five hundred (1,500) additional daily trips, subject to the exception set out below.
When sufficient information on the proposed development is available for the City of Claremont to determine that the aforementioned criteria is met, a TIS shall be submitted with all preliminary plats, site plans, site plan revisions, and special use permit applications. The trip rates shall be based on trip generation rates contained in the latest edition of Trip Generation published by the Institute of Transportation Engineers or any local trip generation rates either published or approved by the City of Claremont. Additional trips shall be determined by subtracting the gross trip generation of the existing use from the gross trip generation of the proposed use. The additional trip calculation shall apply to property that is occupied at the time of submittal or has been occupied at any time prior to submittal.
If a development or property experiences a change in zoning classification after the effective date of this chapter and special circumstances exist, the City of Claremont may require a TIS without regard to the expected trip generation of the development. Factors that would warrant such a requirement are:
1. There are existing levels of service deficiencies in the area of the proposed development. (“Level of Service” as defined in the Highway Capacity Manual - Transportation Research Board Special Report 209) and/or
2. Available accident data and/or operational and geometric factors indicate safety concerns.
Notwithstanding the above, a TIS shall not be required if the property to be rezoned or developed has been the subject of a TIS within the previous three (3) years and the projected trip generation of the newly proposed development is equal to or less than the previous study performed and the trip distribution has not significantly changed. As a part of subdivision, site plan and driveway permit approval, the City of Claremont may require needed transportation improvements for the property requesting development approval; however, a TIS shall not be utilized as a means for staff to require the party developing the property to make needed transportation improvements remote from the property for which the TIS is submitted, nor shall identified deficiencies in level of service automatically preclude approval of the proposed development.
The TIS shall address the proposed land use, the trip generation therefrom, site access, modal splits if appropriate, impacts on the transportation system from the proposed development, and physical improvements or enforceable management strategies to mitigate negative impacts. At a minimum, the TIS shall identify the improvements necessary to maintain Level of Service D for streets and intersections as defined in the Highway Capacity Manual - Transportation Research Board Special Report 209. Any TIS, whether required or voluntarily prepared, must be prepared by a licensed engineer in accordance with city guidelines. Additionally, the TIS should be reviewed and approved by city staff before being considered by City Council or any planning agency of the city.
Developments/properties that have not experienced a change in zoning classification since the effective date of this chapter are not required to prepare a TIS as a part of their site plan approval. (Ord. of 12-7-04, No. 37-02; Ord. of 6-21-21, No. 41-21)