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 – (CMFs for Changing Left Turn Phasing Paper ) 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
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
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
Innovative Signs and Markings to assist drivers in judging available gaps
Before-Intersection Signing 22
After-Intersection Signing 23
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 - manual.htm manual.htm Signalized Intersections: Informational Guide - earch/safety/04091/index.cfm earch/safety/04091/index.cfm ITE Handbook KYTC Traffic Operations Guidance Manual NCHRP Report 731
Questions?