DYNAMIC LATE MERGE

DEPLOYMENT CRITERIA CONSIDERATIONS:
A DLM System should be considered for deployment as part of a project’s temporary traffic control plan when either of the following conditions are anticipated:

• A high hourly traffic volume causes a queue of traffic before the merge area for at least 2 hours per day. Typically, this volume must exceed 1500 vehicles/hour to cause large queues.
• During congested periods, the estimated traffic queue lengths (without the DLM system implemented) may encroach on upstream intersection/interchange operations.

ANTICIPATED SYSTEM AFFECTS:
When properly designed and deployed for a specific project, a DLM System should alert drivers of an upcoming traffic slow-down and inform them to use both lanes until the merge point. By maintaining two lanes of traffic, it is anticipated that the system will reduce the length of a queue by 40%, the differential speed between lanes will be minimal and road rage incidents will be greatly reduced within the traffic queue.

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