Standard Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals
|Publication Date:||1 January 1994|
These specifications are applicable to the design of supports for highway signs, luminaries and traffic signals.
The sizes of signs for any installation are controlled by the current Maual on Uniform Traffic Control Devices for Streets and Highways.
General guidlines concerning lighting systems for highways may be found in an Informational Guide for Roadway Lighting, as published by the Highway Subcommittee in Design of AASHTO.
The lighting of modern freeways includes the use of typical standard vertical shafts about 30 feet high (9.14 m), which have been in use for many years, as well as supports which are now being utilized with heights up to 50 feet (15.24 m). Interchange highlevel lighting poles or towers are being utilized from heights of 50 feet (15.24 m) to 150 feet (45.72 m), or more.