APS Online Workshop: Overview

Module A

Module B1

Module B2

Module C

Module D

Module E

• Slides 1-10
• Slides 11-20
• Slides 21-30
• Slides 31-40
• Slide 31
• Slide 32
• Slide 33
• Slide 34
• Slide 35
• Slide 36
• Slide 37
• Slide 38
• Slide 39
• Slide 40
• Slides 41-50
• Slides 51-60
• Slides 61-63

Module E: Exercises

Module F

Module G

Module E1 - Slide 39

The second situation that we’ll cover is designing an APS installation as a retrofit at an existing intersection.

The designer should strive to meet the specifications of the ideal installation (requirements of Draft PROWAG and MUTCD) to the “maximum extent feasible”.

However, it’s a good idea to document reasons for deviating from the proposed PROWAG (e.g., one pole instead of two separated poles, etc). If a lawsuit is filed, it can be helpful to be able to show issues considered in making the decision. As noted earlier, in response to a request, installation may be limited, with plans to provide additional features at a later date when construction or intersection renovation is planned.