1105-2 MATERIALS
See
Article 106-3 of the
Standard Specifications for certification requirements. With used temporary traffic control devices, construction personnel should judge whether or not the device will serve the intended purpose before allowing the Contractor to place it on the project.
All temporary traffic control devices have been pre-tested and pre-approved by the Work Zone Traffic Control Unit.
Specific product information can be found on the NCDOT Approved Products list. Contact the
Work Zone Traffic Control Unit if you have any questions or need help with the
approved products list.
1105-4 MAINTENANCE AND INSPECTION
The Engineer should establish a regular routine for inspection (day and night) to inspect devices and to perform traffic control surveillance operations. Use a standard form to document each inspection. (
NCDOT Worksite Audit Form R-1). Monitor traffic control devices throughout the project to ensure that they are serving their intended purpose. If a device is no longer adequate for its purpose, have the Contractor replace it. Replace work zone traffic control devices deemed unacceptable according to the guidelines set forth in the American Traffic Safety Service Association's (ATSSA) Quality Guidelines for Work Zone Traffic Control Devices.
If you find something during an inspection that you are unsure about or if something is used that you like that is not part of the Traffic Control Plan, call the
Work Zone Traffic Control Unit. The Engineer and the Contractor should perform these reviews together.
It is a good idea to discuss the amount of traffic control surveillance necessary at the preconstruction conference. The amount of surveillance needed varies. Generally, the amount of surveillance needed is proportional to the size of the project and the complexity of the traffic control plan, and how recently the traffic pattern has been changed.
Examples of factors that could affect when the project needs to be reviewed include: the weather (storms, windy, etc.,) location of the project, and types of devices (drums, barricades, other devices that get knocked over easily).
It is very important to have a consistent systematic plan for performing traffic control surveillance.
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