Module 6

Other Innovative Concepts

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

Module 6CONTINUOUS GREEN-T

CONTINUOUS GREEN T

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CONTINUOUS GREEN T

4

CONTINUOUS GREEN T

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Gainesville, FL

US 119 and Cantley Drive South Charleston, WV

East Lake Sammamish Parkway Photo Credit: Reid Middleton

CONTINUOUS THROUGH AT 4-LEG INTERSECTION

US 301/SR 257Charles County, MD

US 301/SR 257 - Charles County, MD

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Module 6MULTI-LEG ROUNDABOUTS

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MULTI-LEG ROUNDABOUTS

Roundabouts are advantageous at intersections with complex geometry, skew angles, or more than four approaches

Before After

Albuquerque, NM – Central Ave. and 8th

Source: Connecticut DOT Source: Connecticut DOT

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MULTI-LEG ROUNDABOUTS

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MULTI-LEG ROUNDABOUTS

Compared to awkward signalized intersections, roundabouts can be very advantageous for pedestrians

Before

After

Emory Village DeKalb County,

GA

MULTI-LANE ROUNDABOUTS

Typical Lane Line Markings for Roundabout with four 2-lane approaches

QUESTIONS