R308 — Accessible Pedestrian Signal Walk Indications

R308.1 General. Accessible pedestrian signal walk indications shall comply with R308. R308.2 Audible and Vibrotactile Walk Indications. Accessible pedestrian signals shall have an audible and vibrotactile walk indication during the walk interval only. The audible walk indication shall be audible from the beginning of the associated crosswalk. Following the audible and vibrotactile walk indication and during the pedestrian change interval, accessible pedestrian signals shall revert to the pedestrian push button locator tone. R308.3 Audible Walk Indications. Audible walk indications shall comply with R308.3. R308.3.1 Percussive Tone. Where an accessible pedestrian signal is provided at a single crossing or where two accessible pedestrian signals are 10 feet or greater from each other at a corner, the audible walk indication shall be a percussive tone and repeat eight to ten ticks per second with multiple frequencies and a dominant component at 880 Hz. R308.3.2 Speech Walk Message. In alterations, where it is technically infeasible to provide 10 feet separation between pedestrian push buttons on the same corner, the audible walk indication for each signal shall be a speech walk message that complies with R308.3.2. R308.3.2.1 Speech Information Message when Walk Interval is Not Timing. Where speech push button information messages are made available at a pretimed signal or by actuating the accessible pedestrian push button or passive detection device, they shall only be actuated when the walk interval is not timing. They shall begin with the term “Wait,” followed by intersection identification information modeled after: “Wait to cross Broadway at Grand.” If information on intersection signalization or geometry is also given, it shall follow the intersection identification information. R308.3.2.2 Speech Walk Message during Pedestrian Phasing Concurrent with Vehicular Phasing. Speech walk messages that are used at intersections having pedestrian phasing that is concurrent with vehicular phasing shall be patterned after the model: “Broadway. Walk sign is on to cross Broadway.” R308.3.2.3 Speech Walk Message during Exclusive Pedestrian Phasing. Speech walk messages that are used at intersections having exclusive pedestrian phasing shall be patterned after the model: “Walk sign is on for all crossings.” R308.3.2.4 Speech Walk Message and Pilot Light. If a pilot light is used at an accessible pedestrian signal location, each actuation shall be accompanied by the speech message, “Wait.” R308.4 Volume. Audible walk indications shall be louder than ambient sound up to a maximum volume of 5 dBA louder than ambient sound. Automatic volume adjustment in response to ambient traffic sound level shall be a maximum volume of 100 dBA. Exception: Where audible beaconing is provided in response to an extended push button press, the beaconing can exceed 5 dBA louder than ambient sound. R308.5 Vibrotactile Walk Indication. The pedestrian push button shall vibrate during the walk interval.