Success
in the driving task depends on the drivers’ ability to receive and use
information from many sources, including traffic control devices. Principles of
driver information needs and processing capabilities are discussed in this
module, as well as principles of uniform traffic control devices and the role
of the Manual on Uniform Traffic Control Devices. Types and applications of signs, pavement
markings, and traffic control signals are discussed. Principles of traffic signal phasing and
timing, and signal system operation are covered. Traffic control devices for
highway-railroad grade crossings and highway work zones are also emphasized in
this module.