Shsp INTERSECTION EMPHASIS AREA

SHSP INTERSECTION EMPHASIS AREA

Emphasis Area Definition The term intersection crash is defined as

a crash which occurs just before, just after or inside the limits where two or more highways join or cross.

Emphasis Area Goals

To reduce the number of annual roadway intersection fatalities by 10 per year by December 31, 2014

To reduce the number of annual roadway intersection crashes involving incapacitating injuries by 100 per year by December 31, 2014

Intersection Emphasis Area Objectives

To implement cost-effective countermeasures at acceptable deployment levels to achieve the planned reduction in intersection fatalities and incapacitating injury crashes

To advance new strategies and concepts that support reductions in intersection fatalities and incapacitating injuries

Program projects from current year Intersection Emphasis List

CMF – 0.806 (CMFs for Changing Left Turn Phasing Paper 12-2521)

Implement Flashing Yellow Arrow where applicable

CMF = 0.85 (CMF Clearinghouse)

Implement retroreflective backplates

CMF ~ 78% for rear-end, wet road crashes (CMF Clearinghouse)

Implement High Friction Surface on applicable intersection approaches where applicable

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Improve management of access near signalized/unsignalized intersections

Improve management of access near signalized/unsignalized intersections

Intersection Re-alignment

Local Engineering Strategies?

Develop standard signs and markings layout to be used by field personnel

Implement use of supplemental signal heads where applicable

Implement use of supplemental signal heads where applicable

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Signal Head visibility

Signal Head Visibility

Provide Dashed Markings (Extended Left Edgelines) for Major-Road Continuity Across the Median Opening at Divided Highway Intersections

Guide motorists more effectively through complex intersections

Guide motorists more effectively through complex intersections

Innovative Signs and Markings to assist drivers in judging available gaps

Before-Intersection Signing22

After-Intersection Signing23

Clearance Intervals

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Clearance Intervals

Clearance Intervals

Speaking of clearance intervals……..

Check side street delay Check min. green time Check gap Check LTT Uploading/Downloading Timing Check Pedestrian Timing

Signal Inspection

Resources

Signal Timing Manual - http://ops.fhwa.dot.gov/arterial_mgmt/tstmanual.htm

Signalized Intersections: Informational Guide - http://www.fhwa.dot.gov/publications/research/safety/04091/index.cfm

ITE Handbook KYTC Traffic Operations Guidance

Manual NCHRP Report 731

Questions?