APS Online Workshop: Overview

Module A

Module B1

Module B2

Module C

Module D

Module E

Module E: Exercises

Module F

• Slides 1-10
• Slides 11-20
• Slides 21-30
• Slide 21
• Slide 22
• Slide 23
• Slide 24
• Slide 25
• Slide 26
• Slide 27
• Slide 28
• Slide 29
• Slide 30
• Slides 31-33

Module G

Module F - Slide 26

When adjusting sound settings, some issues to consider include split phasing, nearby sound reflectors and the presence of channelized turn lanes. Each of these should affect how the sound is adjusted.

In a location with split phasing, the WALK indication for the east crosswalk should not be easily heard at the west crosswalk. With that protected left turn, it is not the appropriate time for pedestrians on the west crosswalk to cross. Make sure to verify the audibility in person.

Where there are nearby sound reflectors, such as buildings, the reflection may cause a different effect than what is desired. Make sure to listen to the device in the field to avoid these issues.

Where there are channelized turn lanes, the WALK indication for pedestrians crossing the street from the island should not be easily heard by pedestrians waiting to cross from the curb to the island. If vehicles in the turn lane do not have to stop (yield control only), blind pedestrians who assume that the WALK indication applies to the turn lane may make a dangerous mistake. The MUTCD cautions against using audible beaconing for the longer crosswalks at intersections with split phasing or channelized turn lanes, since the beacon may be heard at locations to which it does not apply (as described above)