Page 60 - TransportationPlanUsetsGuide

3� Monitoring travel conditions with an appropriate level-of-service and other performance
standard
The Transportation System Plan makes the presumption that building a roadway system to accommodate
all motor vehicle traffic at desired standards during the peak travel period may not be practical. Certain
project(s) necessary to provide desired peak-period motor vehicle performance would be extremely difficult
to build for reasons of physical impacts, costs, and conflicts with other goals or community aspirations. In the
meantime, the Interim Washington County Motor Vehicle Performance Measures will continue to fulfill the
important role of evaluating target and acceptable motor vehicle performance.

4� Encouraging transportation demand management programs and partnerships
Transportation Demand Management (TDM) is the general term used to describe any activity that provides
an alternative to single-occupant-vehicle trips. TDM encompasses a range of strategies such as carpooling,
staggered work shifts and/or telecommuting. These strategies encourage ridesharing (e.g., car- or van-
pooling), transit use (e.g., fare subsidies), bicycle commuting (e.ge., on-site showers, lockers or bike parking),
ADOPTED TEXT reduce traffic congestion problems and improve overall mobility.
walking to work and/or flexible work hours. TDM strategies are relatively low-cost initiatives that can help

As growth in Washington County occurs, the number of vehicle trips and travel demand in the area will also
increase. The ability to provide alternatives may help accommodate this growth. TDM strategies and pro-
grams have taken on increased importance and emphasis recently. This is in part due to an increased inter-
est in improving air quality and active transportation and health. TDM strategies are encouraged by a number
of organizations for these reasons, as well as reducing the need and expense for additional vehicle capacity.
The State of Oregon requires employers with more than 50 employees to have programs in place that reduce
the percentage of employees who drive alone to work.

Transportation Management Associations (TMAs) are typically public/private partnerships that have been
established in some areas to coordinate and assist firms in complying with these regulations and to be ad-
vocates for activities that reduce demands on our roadway system. TMAs play a role in reducing single-occu-
pant-vehicle trips, reduce green-house gas emissions, foster economic vitality, improve health and enhance
the efficiency of our regional transportation network. Since 1997 the Westside Transportation Alliance (WTA)
has worked with its partners and Washington County employers to offer workplace services and programs
that help employees commute to work by transit, carpool, vanpool, walking and biking. More recently the WTA
expanded its focus to include business services such as “last mile” connections and creation of bicycle park-
ing resources.

48 PART 3: TRANSPORTATION MODAL ELEMENTS
Effective November 27, 2015 • Updated December, 15 2016