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Planning Guidance for the Installation and Use of Technology Devices for Transportation Operations and Maintenance

ENTERPRISE Transportation Pooled Fund Study

Intelligent Work Zone (IWZ)

For purposes of the ITS device guidance process, Intelligent Work Zones are defined as a collection of planning guidelines from other devices (DMS, CCTV, HAR, VSL, DSDS Ramp Meter) that collectively warn travelers of various hazards associated with work zones.

Engineering judgment should be used to assess potential implications that may result from installation of intelligent work zone devices. This planning guidance does not mandate the use of intelligent work zones.

The following six (6) guidelines have been identified to capture the most common uses of Intelligent Work Zone Devices from the other device guidelines that have been developed. For example, the VSL guidelines includes one purpose focused on work zones.  Therefore this guideline (VSL Planning Guideline #4: Work Zones) is included in the collection of purposes for Intelligent Work Zones. Note that there are additional devices to consider when deploying an IWZ as well as existing system components to consider. If you have suggestions of additional IWZ guidelines please contact us.

DMS Guideline - 3:

Changing Traffic Control or Conditions

CCTV Guideline - 6:

Intelligent Work Zone

HAR Guideline - 3:

Changing Traffic Conditions

VSL Guideline - 4:

Work Zones

DSDS Guideline - 3:

Intelligent Work Zone

Ramp Meter Guideline - 3:

Work Zone Activity