The pedestrian LED traffic signal module shall be designed as a retrofit replacement for the message of a 400-mm 16-inch by 450 mm (18 inch) pedestrian signal housing built to the PTCSI Standard. The “HAND” and “MAN” symbol shall be 300 mm (12 inches) in height, and conform to PTCSI Standards. Pedestrian LED signal modules shall be designed so, that when operated over the specified ambient temperature and voltage range, the signal shall attract the attention of, and be readable to, a viewer (both night and day) at all distances from 3 meters to 60 meters (9.8 feet to 196.9 feet). The measured Chromaticity coordinates of the LED pedestrian signal module shall conform to the Chromaticity requirements of Section 4.2 and figure 2 of the PTCSI standard. The LED pedestrian signal module shall be man/hand with full figure for the man and, full figure for the hand. Man/Hand overlay and countdown should be within same module. The LED signal module shall be rated for use in the ambient operating range, measured at the exposed rear of the module, of –40° C to +74° C (-40° F to +165° F). The LED signal module shall be protected against dust and moisture intrusion per the requirements of NEMA Standard 250-1991, Section 4.7.2.1 and 4.7.3.2, for Type 4 enclosures to protect all internal LED, and electronic components. The external lens surface on all vehicle signals shall be smooth, with no raised features, so as to minimize the collection of dirt, diesel smoke, and other particulate contaminants, and to facilitate periodic cleaning. External lens facets are not allowed. The LED signal module lens shall be UV stabilized and scratch resistant. The LED’s shall be mounted and soldered to a printed circuit board. The LED signal module shall be watertight when properly mounted in traffic signal housings. The LED signal module shall utilize the same mounting hardware used to secure the incandescent lens and gasket assembly and only require a screwdriver or standard installation tool to complete the mounting into an existing traffic signal housing built to the VTCSH Standard. Unit shall connect to existing electrical wiring utilizing quick connect terminals.
