01663665

Component

Guidelines for trip and parking generation in the United States come mainly from the Institute of Transportation Engineers (ITE). However, their trip and parking manuals focus on suburban locations with limited transit and pedestrian access. This study aims to determine how many fewer vehicle trips are generated at transit-oriented developments (TODs), and how much less parking is required at TODs, than ITE guidelines would suggest. This study follows a trip and parking generation study by the authors at five exemplary TODs across the U.S. The subject of this case study is Orenco Station, on the west side of the Portland metropolitan area in the suburban city of Hillsboro. Orenco Station may be the most famous and lauded freestanding TOD (as opposed to infill TOD) in the nation. Like the first five case studies, Orenco Station is more or less exemplary of the D variables featured in the built environment-travel literature. The Orenco Station TOD creates significantly less demand for parking and driving than do conventional suburban developments. Peak parking demand is less than one half the parking supply guideline in the ITE Parking Generation manual. Also, vehicle trip generation rates are about half what is predicted in the ITE Trip Generation Manual. The automobile mode share is 31 percent of all trips, with the remainder being mostly transit and walk trips.

This paper was sponsored by TRB committee AP025 Standing Committee on Public Transportation Planning and Development.

18-05650

English

0000-0001-5055-7833

18p

2018

Transportation Research Board 97th Annual Meeting

Digital/other

Figures; Maps; Tables

Parking demand; Transit oriented development; Trip generation

Hillsboro (Oregon); Portland Metropolitan Area (Oregon)

Operations and Traffic Management; Passenger Transportation; Public Transportation; Terminals and Facilities

Transportation Research Board Annual Meeting 2018 Paper #18-05650

TRIS, TRB, ATRI

Jan 8 2018 11:27AM