Module F - Slide 25

ModuleF_Slide25

The functioning of APS, ie the short duration of the tones, do not allow the sound to be accurately measured with a sound level meter. A meter requires an extended tone to evaluate the sound and cannot measure sound from the locator tone or WALK indication. Basically, it’s up to the installers to evaluate, by listening from different locations on the corner, whether the volume is set properly. The locator tone and WALK indication should be heard within 6-12 feet, of the pole where the APS is mounted, or to building line, whichever is less (MUTCD). If audible beaconing is installed, it should be evaluated from centerline of street.