Traffic Control Devices

Traffic Control devices are all signs, signals, markings, and devices placed on or adjacent to a street or highway by a public body having the authority to regulate, warn or guide traffic.

Traffic Control Device Uniformity
Uniformity means treating similar situations in the same way. This simplifies the task of the driver because it aids in instant recognition and understanding.

Uniformity aids police, courts and road users by giving everyone the same interpretation. It aids public highway officials through economy in manufacturing, installation, maintenance, and administration.

Manual on Uniform Traffic Control Devices

The Manual on Uniform Traffic Control Devices is the publication that sets forth the basic principles which govern the design and usage of traffic control devices. The manual was prepared by a national committee which included state, county, and municipal representation.

The standards in this manual with certain exceptions apply to all streets and highways regardless of the governmental agency having jurisdiction.