Accession Number : ADA195941

Title :   St. Louis Harbor Electroluminescent (EL) Bridge Lighting Project.

Descriptive Note : Final rept.,

Corporate Author : COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CT

Personal Author(s) : Winslow, T S ; Mandler, M B

PDF Url : ADA195941

Report Date : Mar 1987

Pagination or Media Count : 26

Abstract : In March 1986, Coast Guard R & D Center engineers deployed two prototype electroluminescent lighting arrays on the main span of the Poplar Street Bridge in St. Louis Harbor. THe objective was to demonstrate the concept of extended light sources as applied to aids-to-navigation engineering. These extended light sources were designed to assist south-bound tug pilots in identifying and safely transiting the main bridge span on the Missouri side of the Mississippi River. In prior years, pilots had experienced difficulty transiting St. Louis Harbor during the high water season, with the Poplar Street Bridge being involved in at least two serious tug/tow incidents and numerous minor ones. No accidents have been reported since the prototype arrays were deployed in March 1986. User feedback concerning the EL arrays, was consistently positive. The report describes the design, fabrication and deployment of the EL array, as well as reasons for perceived improvement in signal effectiveness. Keywords: Navigational aids; Visual aids; Conspicuity; Visual perception. (edc)

Descriptors :   *BRIDGES, *LIGHTING EQUIPMENT, *ELECTROLUMINESCENCE, ACCIDENTS, ARRAYS, COAST GUARD, ENGINEERING, FEEDBACK, HIGH RATE, LIGHT SOURCES, MISSISSIPPI RIVER, MISSOURI, NAVIGATIONAL AIDS, PILOTS, PROTOTYPES, SEASONS, SIGNALS, USER NEEDS, VISUAL AIDS, VISUAL PERCEPTION, WATER, HARBORS

Subject Categories : Air Condition, Heating, Lighting & Ventilating
      Land and Riverine Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE