17.08.050 Transportation planning rule (legislative and quasi-judicial).
A. Zone changes and amendments to the comprehensive plan and land use regulations which significantly affect a transportation facility shall assure that allowed land uses are consistent with the function, capacity, and level of service of the facility identified in the Transportation System Plan. This shall be accomplished by one of the following:
1. Limiting allowed land uses to be consistent with the planned function of the transportation facility;
2. Amending the Transportation System Plan to ensure that existing, improved, or new transportation facilities are adequate to support the proposed land uses consistent with the requirement of the Transportation Planning Rule;
3. Altering land use designations, densities, or design requirements to reduce demand for automobile travel and meet travel needs through other modes;
4. Amending the Transportation System Plan to modify the planned function, capacity or performance standards of the transportation facility.
B. A plan or land use regulation amendment significantly affects a transportation facility if it
1. Changes the functional classification of an existing or planned transportation facility;
2. Changes standards implementing a functional classification system;
3. As measured at the end of the planning period identified in the adopted transportation system plan or, when evaluating highway mobility on state facilities, as measured at the end of the 20 year planning horizon or a planning horizon of 15 years from the proposed date of the amendment adoption, whichever is greater:
a. Allows types or levels of land use that would result in levels of travel or access that are inconsistent with the functional classification of a transportation facility;
b. Would reduce the level of service of the facility below the minimum acceptable level identified in the Transportation System Plan; or
c. Worsen the performance of an existing or planned transportation facility that is otherwise projected to perform below the minimum acceptable performance standard identified in the TSP or comprehensive plan.
C. Traffic Impact Analysis. A Traffic Impact Analysis or Traffic Assessment Letter shall be submitted with a plan or land use regulation amendment or a zone change application. (See Section 17.20.060 Transportation Impact Analysis).