Lane-use Signal Design Issues
Lane-use Signal Guideline Development
|Guideline||Lane-use Control Signals Design Guideline 1|
|Text||Recommend use of MUTCD standard green arrow and red “X” design for lane-use signals in lieu of traditional signal heads.|
Use of traditional signal head may cause confusion, as the green and red signal head indications generally mean “go” and “stop”, not “open” and “closed”.
|Guideline||Lane-use Control Signals Design Guideline 2|
|Text||Lane-use signal faces shall provide a minimum nominal height of 450mm (18 in.) or 12” diameter, be visible from a minimum distance of 600’, provide readily accessible power and communication interconnections, be comprised of long life, high intensity LEDs, and be installed with a minimum vertical clearance of 17’.|
These requirements are considered general and are not intended for procurement purposes.
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