module 7 exercise intersection & interchange geometrics (iig) innovative design considerations...

Module 7

Exercise

Intersection & Interchange Geometrics (IIG)Innovative Design Considerations for All Users

APPLICATION EXERCISE

In teams, participants will discuss potential applications of alternative designs at the following three intersections:1. US 151 - Rural expressway2. SR 7 - Arterial in developing

suburb3. US 167 - Urban arterial

US 151

SCENARIO 1

RURAL FOUR LANE DIVIDED HIGHWAY

US-151 & Springville Rd.

FAR SIDE ANGLE COLLISIONS

SR 7

SCENARIO 2

SUBURBAN HIGH VOLUME ARTERIAL

SR 7 at Berry Hill Road

CONTEXT AND CONDITIONS

Rapidly developing suburban land use Commercial on north side Residential / mixed-use on south side

Currently STOP control at both minor road approachesHeavy through volumes on arterial45 mph posted speed – higher operating speeds

Residents and businesses are complaining about delay waiting to turn out from minor roads – they want a signal!

US 167

SCENARIO 3

URBAN HIGH VOLUME ARTERIAL

KEY CONSIDERATIONS TO DISCUSS

Applicability Characteristics Operational Benefits/Disadvantages

Safety Benefits/Disadvantages Pedestrian Accommodation ROW Constraints & Access Issues

QUESTIONS