Road Safety Matters

United Nations' General Assembly approves first ever conference on road safety

2008-04-07T20:12:00.000-04:00

On Monday, March 31, 2008, the United Nations heard the alarming statistics that many in the road industry already know too well: more than 1.2 million die on the world's road each year; more than 50 million are injured; and, road accidents are the leading cause of death among people aged 10-24. And now, the UN has decided to finally do something.

It was approved at the UN General Assembly that a road safety conference will be held in 2009 in Russia. The goal of the meeting is purportedly to gather together high-ranking ministers of transport and health from most of the U.N.'s member states who will discuss road safety issues and should hopefully spur real change.

The IRF applauds and fully supports the UN resolution and the upcoming conference. It is much needed and long over due. As government officials and policy makers come together to combat this epidemic, IRF encourages all to remember that road safety isn't just about driver bahvior - wearing seat belts, driving slower, not driving intoxicated.

Road safety needs a three-pronged approach - the driver, the vechicle and the road.

Although a sweeping change in driver behavior would do much to curb the current carnage on the road, it is not an all inclusive solution. Vehicles need to be safer and the roads certainly should plan for accidents. For no matter how safe a driver or secure the vehicle, humans will always make mistakes and vehicles can malfunction. And the road should be designed, built, and equipped in order to forgive that mistake, and mediate vehicle failure.

An all-inclusive approach to road safety should include the transfer of technology and the proper training to implement such technologies, including such topics as, but not limited to:

Roadside Safety & Median Application
Proper Vertical & Horizontal Signage – Delineation and Illumination
Work Zone Safety
Intersection and Roundabout Safety
Low Cost Safety Improvements
Pedestrian Safety
Safety Technology Concepts
Traffic Calming
Enforcement
Safety Audits
Collection and Use of Statistics

What other problem areas can we improve in order to build better, safer roads?

IRF-Washington creates road safety working group

2008-04-03T16:01:00.004-04:00

In order to combat the growing epidemic of road fatalities and injuries on roads around the world, the IRF-Washington Road Safety Working Group brings members together to present road safety position statements and policies that can be endorsed by the entire IRF organization and publicized worldwide and implemented with the IRF’s support.

The Road Safety Working Group is open to all IRF members who have an interest in road safety. The Road Safety Working Group meets once a year and holds two or three conference calls during any twelve month period. During these meetings and conference calls, ideas, opinions, and information are exchanged in order to capture all views of any given topic. This all-inclusive approach ensures that IRF-Washington policy statements on road safety will be a sound, diverse representation of the worldwide road building community.

Once the IRF-Washington Road Safety Working Group finalizes a policy statement, the proposed policy statements are presented to the IRF Council on Road Safety (the consortium of Road Safety Working Groups from Brussels, Geneva and Washington) for their endorsement and support. During the meeting of the IRF Council on Road Safety, all working group members have the opportunity to speak on behalf of the proposed policy statement. Once the statement (or white paper) is approved by the Council, IRF presents the approved policy during a ministerial meeting to key government decision makers from around the world. Currently, IRF has more than 70 ministries and road directorate members. Road Safety Working Group members may be invited to meet with the ministers to discuss the policy statement.

If the IRF Council on Road Safety does not endorse a position statement from one of the Road Safety Working Groups, the Road Safety Working Group is allowed to publicize the position statement with the clear designation that the position statement is only supported by the single Program Center and not by the IRF as a whole.

Upcoming position statements include, but are not limited to:

The need for on-going road safety training as it relates to roadside safety, intersection/roundabout safety, vulnerable user safety, work zone safety, driver education, enforcement techniques and road safety audit
Motorcycle use continues to grow around the world and motorcycle accidents and fatalities continue to rise at an alarming number. How can road authorities modify their road design, education and enforcement procedures to reduce these fatalities?
Congestion in municipal areas is worse than ever causing safety, productivity, and environmental concerns. What innovative concepts should be considered to alleviate congestion in municipalities?
Poles located close to the road can be extremely dangerous. The use of breakaway devices and other technologies to make these rigid roadside hazards less dangerous by allowing the vehicles to pass through should be endorsed and encouraged. What can be done to promote the expanded use of these safety features?

Members of the IRF-Washington Road Safety Working Group will be able to effect real change in the world. This is a great opportunity to have an attentive audience of key governmental decision makers around the world who will hear the voice of the industry and listen to your counsel.

Join the IRF-Washington Road Safety Working Group

IRF-Washington and IRF-Brussels Endorse EN 1317 and NCHRP 350 for Worldwide Use

2008-02-25T12:55:00.001-05:00

IRF-Washington and IRF-Brussels support the mandated use of roadside safety features that meets state of the art testing for today’s vehicle fleet on every road around the world. In Europe, road authorities are required to use products that meet EN 1317. In the United States, products must meet the NCHRP 350 standards. Both of these testing criteria have been developed over years and they are proven to be good methods of verifying the performance of a roadside safety feature. Counties that require the use of products that meet one of these specifications can be assured their road safety money is being wisely spent on a product that will perform properly when impacted.

Road authorities in countries that do not have updated or adequate roadside safety feature specifications should use either the European EN 1317 or the American NCHRP 350 criteria or both of them when developing roadside safety hardware performance specifications. The development of specifications outside NCHRP 350 and EN1317 would be both time consuming and expensive and would not produce better safety hardware at a cheaper price. The EN1317 and the NCHRP 350 criteria have proved to be very effective. Allowing products that meet either criterion will give the local road authorities more product options thereby reducing project costs.

During their meeting on January 14, 2008, the following proposal was approved unanimously by the AFB 20(2) Roadside Safety Design Subcommittee on International Research Activities for those countries currently not required to use NCHRP 350 or EN 1317 criteria to create performance specifications for their roadside safety features.

"The AFB20(2) Roadside Safety Design Subcommittee on International Research Activities recommends that road authorities in all countries should only specify roadside safety hardware, (i.e. longitudinal safety barriers, crash cushions, terminals and transitions) that has met either NCHRP 350 or EN 1317 criteria (or their updates.)"

The IRF (Washington and Brussels) support and endorse this statement and encourage every road authority around the world to implement this policy. Spending money wisely to use current, proven state of the art technology, products and concepts will help to make the roads safer and better.

Breakaway Posts

2008-01-29T13:35:00.000-05:00

by:

Michael S. Stenko
President, Transpo Industries

Breakaway or frangible posts should be used on all posts located close to the road. The use of these breakaway or frangible devices will make the posts less rigid thereby safer when impacted by an errant motorist.

Full scale crash testing, required by the new proposed NCHRP 350 update in the United States, has shown that some multiple post sign panel designs currently in use are not capable of resisting the forces exerted when one of the support posts is impacted. The result is the inability of the impacted post fuse/hinge plates to activate, which could cause the failure of all of the remaining frangible bases. It is critical for safety that a multiple post sign should remain standing and be supported by the posts not impacted. The post fuse/hinge plates are critical components in the resultant change in velocity of the vehicle and passengers.

Research is needed to study the structural characteristics of ground mounted sign panels that are currently installed on multiple posts, This research should include a survey of sign panel designs currently in use and subsequent modeling of each design. Simulation crash testing should be performed with both the small car and pickup truck. Simulation should be verified by full scale crash testing. The final report would result in minimum sign panel design criterion for use on multiple post ground mounted signs with either breakaway posts or base assemblies with fuse/hinge plates.

How do we get this research funded and started?

Mike Stenko has over 25 years in the industry and has been with Transpo for over 16 years. He is a member of TRB, ACI, ASCE, Chairman of ACI Comm. on Polymers Concrete. Sub-Comm. Chair of AASHTO/AGC/ARTBA Taskforce 13 Subcommittee on highway signs and luminaries.

The Importance of Updated Standards for Roads

2008-01-02T09:05:00.000-05:00

by: Mario Ledierman
M.J. Ledierman & Associates

There many topics to add to the road safety activities of the IRF but one of the most important issues from my point of view, and considering the experience I have on the road network in most of the Latin American countries, is the lack of standards to use for the geometric design of a highway or in many cases to avoid minimum standards related with road traffic safety.

That issue is not only a problem in most of the Latin American countries. It is also a problem in the USA and many countries of the "first world".

There are AASTHO´s standards regarding the width of shoulders (depending on the number of lanes in each direction), etc. So why don’t the geometric design engineers follow those standards?

There are many cases in which the problem of widening a road in terms of lanes would sacrifice the width of the shoulders. I believe it is more important to have a road with right and left shoulders keeping the width in each case depending on the number of lanes in each direction.

I have seen same problem in toll roads (access to the city of Buenos Aires) and in a freeway from La Guardia Airport to the City of N.Y.

What is more important – a wider road or a safer road?

As an example: two young boys were killed in a traffic accident on one of the toll roads in Argentina a few months ago. Their car experienced some mechanical failures and they had to stop the car on the left lane of the highway because there was no shoulder. Before the driver could alert the following drivers, a car crashed into the back of the stopped vehicle.

Who is responsible? The highway department that authorized the design? The professional engineer who did the design? The concessionaire, who without caring about safety, built the road without a left shoulder? Or the economical reasons to increase the amount of tolls and to keep the road at an acceptable traffic level?

Same thing applies to many roads in the USA and around the world.

Are we going to accept such things?

Motorcycle Safety

2007-12-19T10:09:00.000-05:00

According to a paper written by Clay Gabler of Virginia Tech titled “The Risk of Fatality in Motorcycle Crashes with Roadside Barriers,” in 2005 for the first time in the United States, motorcycle riders suffered more fatalities (224) than the passengers of cars (171) or any other single vehicle type involved in a guardrail collision. In terms of fatalities per registered vehicle, motorcycle riders are dramatically overrepresented in number of fatalities resulting from guardrail impacts. In the United States, motorcycles compose only 2% of the vehicle fleet, but account for 42% of all fatalities resulting from guardrail collisions. It is very likely that these figures would be similar in other countries and these statistics are getting the attention of highway safety researchers around the world.

Traditionally motorcyclist safety has not been taken seriously into consideration when developing longitudinal barrier testing criteria. Europe recently announced plans to include motorcycle testing into the EN 1317-2 longitudinal barrier testing matrix. The Unites States recognizes the need to do something and is currently evaluating options.

A variety of products have been developed to protect motorcyclists who impact longitudinal barriers. Most of these products, many of which come from Europe, are designed to shield the posts of the steel barrier systems. This is logical since motorcycle riders often are thrown from their motorcycles and are sliding along the ground when they hit the barriers.

I have heard some experts say that they believe that a motorcyclist impacting a concrete barrier, or a steel barrier or a cable barrier system will die. It is just a question of “how dead will you be, 100% or 140% or 160%?” However, the real debate comes from the motorcyclists complaining specifically about the cable barrier systems. They refer to these cable barriers as “cheese cutters.” They cite an accident in October of 2007 in New Zealand where a motorcyclist impacted a cable barrier and the motorcyclist was severed from the waist down. The motorcyclists want the cable barrier banned in New Zealand. This opinion has been voiced in other countries around the world.

Some road experts believe the cable barrier actually is safer for motorcyclists when it is impacted. They explain that the cable barrier steel posts are more likely to fracture when impacted. They also claim the cable barrier will be placed further away from the road because of the working width of the cable barrier.

Both sides of this issue need to be explored and this issue needs to be resolved. The question is simple; are cable barrier systems more dangerous for motorcyclists than steel barriers or cable barriers, are they safer, or are they the same? Your comments are welcomed on this site.

The issue of motorcycle safety and longitudinal barriers will be the focus topic at the AFB 20 (2) Roadside Safety International Research Subcommittee meeting at TRB in Washington DC on Monday January 14 from 3:45 PM to 5:30 PM. This meeting will be held in the Balcony D Room of the Marriott Wardman Hotel. All are welcome to join this meeting to listen to a variety of experts define the problem and then suggest a variety of solutions. Your input to the cable barrier-motorcycle safety issue on this IRF Road Safety Matters blog is strongly encouraged to get as many opinions as possible voices on this topic.

Recommendation on Barrier Specification

2007-11-27T13:10:00.000-05:00

Every country around the world should require attestation that a longitudinal barrier meets a recognized performance standard before a longitudinal barrier is accepted for use. The two most acknowledged testing criteria for longitudinal barriers are EN 1317-2 (Europe) and NCHRP 350 (United States and Australia.) The TRB AFB20(2) Roadside Safety Subcommittee on International Research is considering a proposal that would recommend that only longitudinal barrier that meets either EN1317-2 or NCHRP 350 be accepted on projects in countries that currently do not have longitudinal barrier performance specifications. This proposal will ensure that properly tested longitudinal barriers are installed and that these barriers will provide the anticipated protection when they are impacted.

Allowing either the US or European criterion to be used will provide economic benefit for the local road authority through increased competition. Since both testing criteria require basically the same light car test (820 kg vehicle – plus dummy weight in NCHRP 350 and 900 kg vehicle including dummy weight in EN 1317-2, 100km/h and 20 degree impact angle) the limiting factors will be the impact severity of the capacity test and the anticipate number of high center of gravity vehicles. A longitudinal barrier that meets EN 1317-2 or NCHRP 350 should be allowed to be used provided the capacity test impact severity of the barrier is higher than the capacity test impact severity of the specified longitudinal barrier. The impact severities of the different levels of barriers in EN 1317-2 and NCHRP 350 are shown in Chart 1 below.

Chart 1 - Comparison of Impact Severity Levels

(click chart to enlarge)

For example, if a road authority decides the most appropriate longitudinal barrier for a road should be the EN 1317-2 “N-2” classification, then any barrier that has an impact severity greater than 81 kilojoules should be allowed as well. This means NCHRP 350 Test Levels 3, 4, 5 or 6 as well as EN 1317-2 Test Levels N-2, L-1, L-2, L-3, L-4a or L-4b also could be used on this project.

If accepted at the upcoming Annual Meeting in January in Washington DC, The TRB AFB20(2) Roadside Safety Subcommittee on International Research would strongly recommend that all road agencies require that longitudinal barriers meet the minimum performance standards as outlined in EN 1317-2 OR in NCHRP 350. A safety factor should be included when determining the severity level to be specified. If a significant number of trucks are anticipated on the road, a higher center of gravity barrier should be specified. Furthermore, the TRB AFB20(2) Roadside Safety Subcommittee on International Research would recommend that impact severity levels be used to specify the minimum capacity for a longitudinal barrier and that any barrier with a higher impact severity level be allowed to be bid on the project regardless if the longitudinal barrier has been tested to EN 1317-2 or NCHRP 350.