Session 123Rumble Stripes: Opportunity to 

Improve Safety and RetroreflectivityPresented 

March 6, 2013by 

Alan Plunkett, INDOTBill Smith, INDOT 

Tom Brennan, Purdue

US‐231 MOTIVATION FOR INSTALLATION OF CENTER AND EDGE LINE RUMBLE STRIPES

Alan Plunkett/Bill Smith

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• January 2011• LaPorte District

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DISLODGED RAISED PAVEMENT MARKERSINDOT Struck by Loose RPM, Picture from Stacey Flick

FHWA SAFETY COUNTERMEASURES Longitudinal Rumble Strips and Stripes on 2‐Lane Roads

PAINTED CENTERLINE 

RUMBLE STRIPES

PAINTED EDGELINE

RUMBLE STRIPES

FHWA SAFETY COUNTERMEASURES Longitudinal Rumble Strips and Stripes on 2‐Lane Roads

PAINTED CENTERLINE 

RUMBLE STRIPES

PAINTED EDGELINE

RUMBLE STRIPES

SAFETY BENEFITSLongitudinal Rumble Strips on 2‐Lane Roads

• Center line rumble strips on two‐lane roads

– Provide a 45% reduction of head on / fatal and injury crashes

• Edgeline rumble strips on two‐lane roads

– Provide a 35% Reduction of target crashes

• Alerting distracted, drowsy drivers

• Providing Indication of Lane Location during adverse weather conditions

SAFETY BENEFITSTactile and Audible Reponses to Vehicle Leaving Lane 

SAFETY BENEFITSTactile and Audible Reponses to Vehicle Leaving Lane 

Corrected Incursion 

(Southbound)Corrected Incursion 

(Northbound)

SAFETY BENEFITSTactile and Audible Reponses to Vehicle Leaving Lane 

APPLYING PAINTED RUMBLE STRIPES US‐231Lane Departure Crashes

• Three notable incidents occurred between April and May 2012, two of which were fatal head‐on crashes.

FIELD DEPLOYMENT ON US231Typical Existing Pavement Marking/Lane Layout Retrofit

~3’ ~3’

4” LINE 8” SPACE 4” LINE

11’ 0”

~30’

4” White Line

• Contract Letting: 8/8/12

• Completion: 10/31/12

Existing RPM

Project Limits ~18.5 Miles

Rumble Size/Location 

Limited in Towns

Not placed in towns due to low speed conditions

Romney

Linden

FIELD DEPLOYMENT ON US 231Installation Limits

• US-231 is a two lane rural highway

• ADT > 8,000 VPD between Lafayette and Crawfordsville

CR 500 S

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US‐231Special Provisions

Lafayette

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US‐231Detail for Recurring Special Provision

Lafayette

Only Gapped at:• Public Road Approaches

• Commercial Drives

PAINTED RUMBLE RESEARCH AND US‐231 INSTALLATION

Tom Brennan, Purdue

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EXAMPLE SAFETY BENEFITSTactile and Audible Reponses to Vehicle Leaving Lane 

EXAMPLE SAFETY BENEFITSNight Time and Wet Weather Visibility

EXAMPLE SAFETY BENEFITS (INSTALL 2010)Night Time and Wet Weather Visibility (Video)

CONSTRUCTION SEQUENCEApproximate Sequence of Retro Fit on US231

~3’ ~3’

11’ 0”

1/2” Depth

~30’

11’ 4”Install Temporary 

SkipsRemove Edge Line

Remove Edge Line

Remove Center Lines

Install Center Rumbles

Install Edge Rumbles

Install Edge Rumbles

Fog Seal (16 – 24”)

Cure Fog Seal (Min 8 Days)

Crack Seal Where Needed

Remove Temporary Skips

4” White Line

4” White Line

Lens Removed from  RPM

Existing RPM (Min 3’ Gap in Rumble; Rumble 6”From RPM)

4” LINE 8” SPACE 4” LINE

16” Rumble Centerline

16” Rumble Shoulder

: Picture from FHWA

Pavement Marking Grinding Machine

INSTALLATION / EQUIPMENTPavement Marking Removal

Lafayette

Grinding Head

Milling Machine Grinding Teeth

EQUIPMENTRumble Milling Machine

Lafayette

Front of Milling Operation Convoy

INSTALLATION / EQUIPMENTPavement Marking Removal (Night Work)

Lafayette

INSTALLATION / EQUIPMENTExample Milling Machine (SR 38)

INSTALLATION / EQUIPMENTExample Milling Machine (SR 38)

Grinding TeethGrinding Teeth

Sweeping the Rumble Strips 1st of 2 Sweeping Trucks to Pass

INSTALLATION / EQUIPMENTSweeping Milled Debris (Night Work)

Lafayette

Joint Crack Sealant

INSTALLATION / EQUIPMENTSealing Centerline Joint after Rumbles Installed

Lafayette

Fog Sealant

INSTALLATION / EQUIPMENTFog Sealant Installed on SR 38

Lafayette

INSTALLATION / EQUIPMENTFog Sealant Installed on SR 38 (VIDEO)

Lafayette

Painting CLRS

INSTALLATION / EQUIPMENTPainting CLRS

Lafayette

Temporary Marking

Completed Paint on  CLRS

Min 8‐Day Cured Fog Seal

Crack sealant placed prior to 

Fog Seal

PAINTED RUMBLES  Installed

Lafayette

LESSONS LEARNED ACROSS INDIANA2010 to Present

Completed Paint on  CLRS

Fog Seal

Crack sealant placed prior to 

Fog Seal

• SR 28 Test Installation (Initial Test): West of Frankfort, East of I-65. 4-lane divided highway. Only painted edge line rumble strips were installed on existing eastbound rumbles for both yellow and white paint. Site was also use to test standard INDOT bead mix and 3M wet-dry bead mix.

• SR38 New Installation: East of Antioch, West of Kirkland. 2 Lane Rural Route. Complete installation on new asphalt including centerline joint adhesive, fog seal, and painted centerline rumble stripes.

• US 120 New Installation: East of US13. Complete installation on new asphalt including centerline joint adhesive, fog seal, and painted centerline rumble stripes. Centerline joint and fog seal were used.

• US231 Retrofit: South of Lafayette, north of I-74. Installation on existing asphalt leaving existing RPMs in place. Edge line as well as Centerline painted rumbles were installed. Milling was performed on existing asphalt, and both the center and edge lines were joint sealed as necessary and fog sealed.

• SR26 New Installation: Between SR29 and US31, west of Kokomo. 2 Lane Rural Route. Installation on new mill and paved asphalt. Epoxy paint on center and edge line with one thermoplastic test strip.

FIELD STUDIES IN INDIANAPaint, Thermoplastic, and Epoxy Paint

• SR 28 Test Installation (Initial Test): West of Frankfort, East of I-65. 4-lane divided highway. Only painted edge line rumble strips were installed on existing eastbound rumbles for both yellow and white paint. Site was also use to test standard INDOT bead mix and 3M wet-dry bead mix.

• SR38 New Installation: East of Antioch, West of Kirkland. 2 Lane Rural Route. Complete installation on new asphalt including centerline joint adhesive, fog seal, and painted centerline rumble stripes.

• US 120 New Installation: East of US13. Complete installation on new asphalt including centerline joint adhesive, fog seal, and painted centerline rumble stripes. Centerline joint and fog seal were used.

• US231 Retrofit: South of Lafayette, north of I-74. Installation on existing asphalt leaving existing RPMs in place. Edge line as well as Centerline painted rumbles were installed. Milling was performed on existing asphalt, and both the center and edge lines were joint sealed as necessary and fog sealed.

• SR26 New Installation: Between SR29 and US31, west of Kokomo. 2 Lane Rural Route. Installation on new mill and paved asphalt. Thermoplastic was used instead of paint at the centerline.

FIELD STUDIES IN INDIANAPaint, Thermoplastic, and Epoxy Paint

#5: SR26 (Edge/Center Lines)

PAINTED CENTERLINE Installation Observations

Paint Appears to have de‐bonded on fogsealPaint Appears to have de‐bonded on fogseal

RPM Lens Removed

Fog Sealant Used on Edgeline

New Edgelinein Rumbles

Old EdgelineRemoved

PAINTED EDGELINEInstallation Observations

• Use design manual guidance for material selection defined in  Indiana Design Manual Chapter 76

MATERIAL SELECTION FOR MARKINGSPaint, Thermoplastic, and Epoxy Trials

Thermoplastic

• Consider quality control in pre‐phase planning– Speed and methods of application– Material temperature/application

Lower Speed Higher Pressure ApplicationHigher Speed Lower Pressure Application

MATERIAL SELECTION FOR MARKINGSThermoplastic on SR 26

Pitting in Rumble

Move Even Application

• Create traffic control plan based on site specific conditions.• Use IMUTCD, Standard Specifications and Standard Drawings for guidance 

to maintain moving traffic.• Include language regarding flagging of traffic and for equipment protection 

in each step of the installation and operation process.• Understand that each process varies in speed (exceeding walking speed) 

and restricts lane usage.• Understand that  rumbles move traffic towards operations.

MAINTENANCE OF TRAFFICGrinding/Milling/Sealing/Marking/Lens Removal: 

Lafayette

CLOSINGBill Smith/Alan Plunkett

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QUESTIONSAlan Plunkett, Bill Smith,  & Tom Brennan: