Work zone intelligent transportation systems

Photos of ITS technologies being used in work zones.  

Intelligent Transportation Systems (ITS) technologies are used to anticipate and reduce congestion caused by highway work zones. The use of ITS technology in work zones such as portable camera systems, highway advisory radios, variable speed limits, ramp metering, traveler information, merge guidance, and queue detection information is aimed at increasing safety for both workers and road users. 

ITS technologies for work zones is an emerging area; these technologies provide the means to better monitor and manage traffic flow through and around work zones. Minimizing the impact of work zone delays through technology has a positive impact on safety, mobility, access and productivity.


Work zone ITS elements should be identified early in the strategy development process and included in the preliminary estimate so they can be designed along with the other traffic control elements. For large mobility projects that have existing freeway cameras already in place, temporary ITS features (temporary poles, portable systems, etc.) may be necessary to ensure that the network can be maintained during the construction, especially if existing camera locations are in conflict with staging areas.

In locations that do not have existing camera locations but have significant construction projects planned, portable ITS systems may be a good opportunity to bring ITS architecture to the route.

WSDOT Work Zone ITS Information:

Links to Work Zone ITS Information: