Best Practice

BEST PRACTICE:

J1−1: Queue Length Detector

DESCRIPTION:

This detector uses infrared beams projected across the traffic lanes to monitor how long it takes vehicles to cross through the beam. If the length of time exceeds a certain preset amount, then traffic has stopped or slowed. When this happens an alert is automatically sent to workers to try to remedy the problem, and take action to increase traffic flow.

REASON(S) FOR ADOPTING:

To detect traffic queues, minimize delays caused by road work, and reduce the number of rear−end collisions.

PRIMARY BENEFIT(S):

Increased safety, fewer rear−end collisions, less delay.

MOST APPLICABLE LOCATION(S)/PROJECT(S):

Any work zone where queues may form.

STATE(S) WHERE USED:

Missouri

SOURCE/CONTACT(S):

Daniel Smith, Missouri DOT
Phone: (573) 526−4329
E−mail: Daniel.Smith@modot.mo.gov