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Communities in Motion 2040 2.0: Roadways

Roadways are the backbone of the transportation system in Ada and Canyon Counties. Buses, commuter vans, and freight vehicles rely on our roadways. In addition, bike lanes and sidewalks along roadways provide a significant portion of our local bicycle and pedestrian infrastructure.

The Regional Transportation Advisory Committee (RTAC) advises the COMPASS Board on regional transportation and related planning issues, including issues affecting our roadways.

Roadway issues are discussed throughout Communities in Motion 2040 (CIM 2040; the current long-range transportation plan), particularly in Chapter 5 (current transportation system), Chapter 6 (future transportation system), and Chapters 7 and 8 (transportation safety and security).

Complete Streets

All transportation needs should be considered when designing roadways and means of meeting those needs must be intentionally built into the transportation system design. One example of discussing how all these transportation system components merge is the concept of “complete streets.” The idea of complete streets is to plan and design roadways with an appropriate balance for all users – bicyclists and pedestrians, public transportation users, freight, and auto users. A key premise of complete streets is to plan roadways within the framework of the entire transportation system. That is, each individual roadway does not need to serve all needs for all users – one road can be designed to maximize the efficiency for freight traffic, while a parallel route can be designed to maximize efficiency for bicyclists.

View COMPASS’ complete streets policy here.

Congestion Management

The congestion management process is a systematic approach for collecting data and identifying congested transportation facilities with the intent to quantify and identify trends in roadway congestion and develop appropriate mitigation measures. COMPASS annually collects travel time data on the highways and arterials of both Ada and Canyon Counties using GPS technology. Learn more here.

Functional Classification

Roadways are classified by how they function within a transportation system. Functional classification divides roadways into three categories: arterial, collector, and local roads. Typically, travelers will use a combination of all three types of roadways for their trips. For example, local roads are intended to serve residential areas; collector roads then funnel traffic from neighborhoods to busy arterial roads, such as highways. Learn more and access functional classification maps here.

Traffic Counts

COMPASS collects traffic count data from various sources to provide to the public and be used for general planning purposes. Traffic count data can be found here.

Travel Demand Modeling

COMPASS uses a travel demand forecast model to estimate average weekday and peak hour demand for the transportation system in the Treasure Valley. The model can show where congestion may occur in the future, as well as other measurements such as travel time and congested speed. Learn more here.

For more information on roadways in the Treasure Valley, contact Liisa Itkonen at 208/475-2241 or