roadside safety webinar - ogra

Roadside Safety Webinar

Aging Municipal Roadside Hardware

TOPIC: Common Aging and Deficient Devices on the Municipal Road Network

SPEAKER:Mark C. Ayton, P.Eng

Senior EngineerSafe Roads Engineering


• Status of Road Safety in Ontario• Deficiency vs Deviation from Standard• Deficiency - Examples • Deviation from Standard - Examples• Innovative Solutions• Roadside Safety Asset Condition Assessment

TOPICS:

Status of Roadside Safety in Ontario


• The MTO is a leading road authority with respect to implementation of new MASH hardware• The MTO has adopted MASH 2016 crash testing evaluation criteria

• W-Beam Guide Rail (M20, M30, Blockless W-Beam)• End Terminals (SoftStop, MSKT, Max Tension)• Cable Guide Rail (Safence)• Crash Cushions (Quad M10, Tau M, SMART, SLED)• Temporary Construction Barrier (Concrete and Steel)

• Ontario Provincial Standards for Roads and Public Works (OPS) PROV and MUNI specifications will align with respect to crash worthy product implementation

• New installations will have MASH options available to specifying agencies• Implementation of new MASH hardware is well underway Provincially and Municipally in Ontario• Solving the issue of when to replace / upgrade aging roadside safety hardware is the challenge

Deficiency vs Deviation from Standard


Deficiency:• A deficiency can be defined as ‘a roadside safety device is deficient if it no longer meets the standard

specification or manufacturers installation instructions to which it was originally installed.’• Deficiencies can be due to a variety of factors included hardware age and traffic impacts. The deficiency

can be categorized into three tiers of severity:

• High: A second impact results in unacceptable safety performance including barrier penetration and/or vehicle rollover.

• Medium: A second impact results in degraded but not unacceptable safety performance.• Low: A second impact results in no discernible difference in performance from an undamaged barrier

Source: NCHRP Report 656 - 2010

Deviation from Standard:• A deviation from standard can be defined as ‘a roadside safety device that was modified or installed not

according to the standard specification or manufacturers instructions.’

Common Deficiencies and DeviationsDeficiency: Deviation:

Low W-Beam / Cable Guide Rail Non-Standard Structure Connection

High W-Beam / Cable Guide Rail Barrier Installation on Steep Slopes

Loose Cable Guide Rail Terminal Installation without WideningLeaning W-Beam / Cable Guide Rail Modified Driveway Treatment / Private Entrance

Damaged to System Obstacles within System Working WidthLack of Repair / Adjustment Modification to Provincial Standards

Severe Rust Designers not adhering to Guidance in the MTO Roadside Design Manual (May ‘20) or TAC Geometric Design Guide (Chapter 7 – ‘17)


Deficient Hardware - Examples

Leaning W-Beam Loose Cable andLeaning Posts

Low W-Beam

Deficient End Terminal

Deficient Grading

Deficient Hardware – Examples (video)

27” Mounting Height 31” Mounting Height

Federal Highway Administration Federal Highway Administration

Deficient Hardware – Examples (video)

W-Beam Leaning 18 Degrees W-Beam Leaning 9 Degrees

ATA Hill & Smith AB - Sweden ATA Hill & Smith AB - Sweden

Deviation from Standards - Examples

Structure Connection – Omitted Posts

Obstacles within Working Width

Modified Leaving End Treatment

Modified Sign SupportBolt and Stub Height

Modified Bridge Parapet Modified Entrance Treatment

Deviation from Standards – Examples (video)

Unanchored Private Entrance Unanchored Private Entrance

Safe Roads Engineering Inc.Safe Roads Engineering Inc.

Deviation from Standards – Examples (video)

Cable System Next to 1.5H:1V Slope Structure Connection Limited Post Spacing

Federal Highway AdministrationMidwest Roadside Safety Facility

Innovative Solutions


New roadside safety hardware meeting MASH evaluation criteria is implemented by the MTO as it becomes available and is shared with the OPS Traffic Safety Committee for Consideration

Blockless W-Beam Systems: Innovative Product

ACP Sentry and Ingal Civil Ezy Guard

Attributes:• MASH TL-3 Crash Tested, included in May 2020 MTO Roadside Design Manual Update• Can be Installed directly in front of the Rounding Breakpoint of a 2H:1V Slope• Have a Narrow Profile of Approx. 200mm – Allowing for More Available Shoulder Space• Crash Tested in Median Configuration• Available with Motorcycle Protection Systems• Post Caps Available for Pedestrian Protection• Additional Pedestrian Railing Attachment for Installations in Proximity to Sidewalks and

Multi-Use Trails to protect both motorists and vulnerable users.

Narrow Profile Blockless W-Beam

Median Blockless W-Beam

Key Resources:


• MTO Roadside Design Manual - May 2020• TAC Geometric Design Guide – Chapter 7

• NCHRP Report 656 - 2010• OPS Standards

• Manufacturers Instructions and Working Drawings• Ontario Traffic Manuals (OTM)

Safe Roads Engineering Team is a valuable asset to Regions and Municipalities with respect to Roadside Safety Hardware

Vision / Knowledge

Design

Training

Maintenance

Inspection

DocumentationThank you for your time

Please do not hesitate to contact our group for more information regarding aging & new roadside

hardware, training programs, design considerations, and asset

condition assessments

roadside safety webinar - ogra

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