Title 33, Planning and Zoning Chapter 33.266
3/1/20 Parking, Loading, And Transportation And Parking Demand Management
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Transportation and Parking Demand Management
33.266.410 Transportation and Parking Demand Management
A. Purpose. Transportation and parking demand management (TDM) encompasses a variety
of strategies to encourage more efficient use of the existing transportation system, and
reduce reliance on the personal automobile. This is achieved by encouraging people
through education, outreach, financial incentives, and pricing to choose other modes,
share rides, travel outside peak times, and telecommute, among other methods. Effective
TDM also incorporates management of parking demand. Transportation and parking
demand management strategies help reduce traffic congestion, reduce the amount of
money that must be spent to expand transportation system capacity, improve air quality,
and ensure road capacity is available for those who need it most.
B. Transportation and parking demand management in the commercial/mixed use and multi-
dwelling zones. In the commercial/mixed use and multi-dwelling zones, a TDM plan is
required when new development includes a building with more than 10 dwelling units, or
an alteration to existing development includes the addition of more than 10 dwelling units
within a building. Sites in the Central City plan district, and sites that are located far from
transit, as described in Paragraph 33.266.110.B.2, are exempt from this requirement. To
meet the TDM standard, the applicant must choose one of the following:
1. Go through the Transportation Impact review process set out in chapter 33.852; or
2. Meet the objective standards of Title 17.107 as verified by the Portland Bureau of
Transportation.
33.266.420 Transportation Impact Review in the Campus Institutional Zones
Development on a site zoned CI with a College or Medical Center use must conform to an approved
Transportation Impact review. Development that is not in conformance with an approved
Transportation Impact review requires Transportation Impact review when the development:
A. Increases the net building area on the campus by more than 20,000 square
feet; or
B. Increases the number of parking spaces on the campus by more than 4.
(Amended by: Ord. No. 164014, effective 3/27/91; Ord. No. 164899, effective 12/11/91; Ord. No.
165376, effective 5/29/92; Ord. No. 166313, effective 4/9/93; Ord. No. 167054, effective 10/25/93;
Ord. No. 167186, effective 12/31/93; Ord. No. 167189, effective 1/14/94; Ord. No. 169324, effective
10/12/95; Ord. No. 169535, effective 1/8/96; Ord. No. 169699, effective 2/7/96; Ord. No. 170704,
effective 1/1/97; Ord. No. 171718, effective 11/29/97; Ord. No. 174263, effective 4/15/00; Ord. No.
174980, effective 11/20/00; Ord. Nos. 175341 and 175358, effective 3/16/01; Ord. No. 175837,
effective 9/7/01; Ord. No. 175966, effective 10/26/01; Ord. Nos. 175965 and 176333, effective
7/1/02; Ord. No. 176469, effective 7/1/02; Ord. No. 177028, effective 12/14/02; Ord. No. 177422,
effective 6/7/03; Ord. No. 177701, effective 8/30/03; Ord. No. 178172, effective 3/5/04; Ord. No.
178509, effective 7/16/04; Ord. No. 179316, effective 7/8/05; Ord. No. 179845, effective 1/20/06;
Ord. No. 179980, effective 4/22/06; Ord. No. 181357, effective 11/9/07; Ord. No. 182429, effective