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

ENTERPRISE Transportation Pooled Fund Study

Ramp Meter Guideline 3 - Work Zone Activity

Purpose: To meter on-ramp traffic during road work activities to improve safety and/or consistent traffic flow.

The planning guidelines for ramp meters are presented as one tool to assist agencies in selecting deployment locations, and are not a replacement for the planning or design process.  Also, prior to deploying a ramp meter  System, ensure the basic requirements of the MUTCD (2009 Edition Chapter 4I. Traffic Control Signals for Freeway Entrance Ramps) have been met at the location of concern.

Engineering judgment should be used to assess potential implications that may result from installation of ramp meter.  This planning guidance does not mandate the use of ramp meters.

 

1a. Capacity Factors. There is a temporary reduction in capacity of through lanes due to either a reduction in the number of lanes, or a reduction in the width of lanes of traffic, causing a backup of traffic during peak periods.

OR

1b. Geometric Factors. There is a temporary change in the geometry or length of the acceleration lane that will potentially have a negative impact on ramp traffic merging with the mainline traffic.

OR

1c. Behavior Factors. There is a desire to discourage the use of the ramp during the period of road work.