Eileen Rackers, P.E. State Traffic And Highway Safety Engineer

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Eileen Rackers, P.E.State Traffic and Highway Safety Engineer

State highway system 33,000 miles 5,500 Major 28,000 Minor Local Roads 100,000 miles 70 billion vehicle miles traveled (VMT)

2010 Fatalities2011201220132014This report contains information that is protected from disclosure by federal law,23 USC Section 409 and the Missouri Open Records Law (Sunshine Act),Section 610.021 RSMo. Please review MoDOT's policy and procedure manualon the Sunshine Act before releasing any of the information contained herein.

2012No Seat BeltRun Off RoadAggressiveCurvesImpairedInattention2013No Seat BeltRun Off RoadAggressiveCurvesImpairedInattention2014No Seat BeltRun Off RoadAggressiveCurvesImpairedInattention

2012No Seat BeltRun Off RoadAggressiveCurvesImpairedInattention2013No Seat BeltRun Off RoadAggressiveCurvesImpairedInattention2014No Seat BeltRun Off RoadAggressiveCurvesImpairedInattentionLANE DEPARTURE CRASHES

Smooth Roads Initiative (SRI)Better Roads, Brighter Future

Integrated system-wide solutions into policy Fluorescent yellow sign sheetingWider stripesDelineationRumble stripesEngineering Policy Guide

Edgeline Rumble Stripes Installed on all major roads with: 4’ or greater paved shoulder Speed limit of 50 mph or more May be omitted via design exception in urban areas Requires collaboration with Central Office Highway Safety Manual (HSM) analysis required May be installed on minor roads with a pavedshoulder (with HSM analysis) Continuous pattern Standard Plan Mini rumbles

Centerline Rumble Stripes Installed on all 2-lane major roads Speed limit of 50 mph or more New pavement projects Omitted on roads with widths less than 20’ May be installed on minor roads with crash history Highway Safety Manual analysis required Alternating pattern (24 inch separation)

Over 11,724 linear miles of edgeline rumbles 8,830 on major roads (2,894 on minor roads) Over 1,946 linear miles of centerline rumbles 1,275 on major roads (671 on minor roads) Several hundred miles in combinationSeveral hundred miles of edgeline rumblesand guard cable in combinationNow installing edgeline rumble stripes onminor routes with AADT at 1,800 or greater Generally on 2-ft paved shoulders

Rumble stripes work Lane departure fatalities down 49% on major roadssince 2005 Rumbles plus signing, striping, & delineation changesLane Departure Fatalities and Rumble Stripes on Major Roads2005 - 20141200010000340800029060002404000190Lane Departure Fatalities:140Rumble Mileage:90200520062007200820092010Calendar Year201120122013200002014(Edgeline & Centerline)390Cumulative Rumble Stripe Miles440Lane Departure Fatalities

Rumbles hold up as well as the shoulder Bad shoulder bad rumble Shoulder depth of at least 3 ¾” (top lift of 1 ¾”) Don’t get the rumbles too deep 7/16” (max of ½” for edgeline and centerline) Install using systemic application Greater gains (not chasing dots)

Few complaints at this point (I-70 example)Public is very accepting (even requested)

FHWA Rumble Strip/Stripes

Eileen Rackers, P.E.State Traffic and Highway Safety EngineerEileen.Rackers@modot.mo.gov

2010 Fatalities . This report contains information that is protected from disclosure by federal law, 23 USC Section 409 and the Missouri Open Records Law (Sunshine Act), Section 610.021 RSMo. Please review MoDOT's policy and procedure manual on the Sunshine Act

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