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Tag Archives: traffic safety
Old Versus New Traffic Safety Paradigms
Here is a quick share of an article on road safety:
Source: Old Versus New Traffic Safety Paradigms
To quote from the article:
“This issue is, of course, complex. Vehicle travel reductions are not the only way to reduce crashes — traditional traffic safety strategies are also important, and the two approaches are often complementary. For example, many targeted traffic safety strategies such as graduated driver’s licenses, special driver’s tests for seniors and anti-impaired driving campaigns become more effective and politically acceptable if implemented with multimodal planning, TDM incentives and Smart Growth policies so youths, seniors and drinkers can find convenient alternatives to driving.”
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On bike lanes contributing to safer roads
Do bike lanes make roads safer? There are obviously mixed reaction to this question especially if you look as social media. If we are level headed about this topic and look at the evidence out there, the answer is yes. But there can be caveats as we try to contextualize in the local setting. The formal studies so far are in countries where the drivers arguably more disciplined than ours here in the Philippines. Driver behavior, after all, is a major factor for road traffic safety. Here is a good article for reference in the discussions and arguments for bike lanes:
Tu, Maylin (November 5, 2024) “How Bike Lanes Slow Drivers and Save Lives,” Next City, https://nextcity.org/urbanist-news/how-bike-lanes-slow-drivers-and-save-lives [Last accessed: 11/10/2024]
To quote from the article:
“Bike lanes with physical delineators (cones or bollards) were more effective than paint-only lanes at calming traffic, echoing a popular mantra for bike activists: “Paint is not protection.” (The lanes were not protected, however, because drivers could drive over the delineators.) For vehicles turning right, top speeds were reduced by 28% and average speeds by 21%. Paint-only bike lanes slowed driver speeds by up to 14% and drivers going straight slowed down by up to 8%…
The study adds that pop-up bike lanes are a cost-effective solution for studying the effects of more permanent solutions — after all, you could just borrow the traffic cones. A city could quickly implement pop-up or temporary infrastructure. Then, armed with data and community feedback, they could invest in making the changes permanent.”
The article also points to a technical paper or scientific article on the traffic calming effect of bike lanes. Here is the link to the article published in the Journal of Urban Mobility: https://doi.org/10.1016/j.urbmob.2024.100071
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Article share: Applying the New Traffic Safety Paradigm
Here is a quick share of an article on traffic safety from Todd Litman of the Victoria Transport Policy Institute. Source: Applying the New Traffic Safety Paradigm
In the article, the author discusses the use of ‘exposure’ as a measure of risk in as far as safety is concerned. The variable ‘vehicle miles traveled’ or in our case ‘vehicle kilometers traveled’ may be considered a risk factor. That is, higher or more VMT or VKT may lead to more crashes and casualties (and additionally damage to property). The objective is to reduce VMT or VKT in order to improve traffic safety.
To quote from the article:
“The new traffic safety paradigm recognizes the additional risk resulting from increases in low-risk vehicle travel and so favors strategies that reduce total vehicle-miles such as improved public transit services with free service for students, efficient school parking pricing to discourage driving, and more compact communities that reduce distances between homes and schools. In addition to reducing traffic risk these strategies also reduce household costs, traffic congestion and pollution problems making them win-win solutions. “
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Article share: Planners’ Complicity in Excessive Traffic Deaths
Here is a recent article on safety and the involvement on traffic engineers from Todd Litman:
Source: Planners’ Complicity in Excessive Traffic Deaths
Let me note here about the interchangeability of the terms ‘traffic engineer’, ‘transportation engineer’ and ‘planner’. This is important to contextualize who is actually complicit or involved or responsible particularly in the Philippine setting. Too often and too quickly, traffic engineers or even civil engineers (in general) are blamed for traffic deaths or flaws in road designs. Disregarded is the fact that, as the article mentions, of the two major elements of travel – distance and speed – distance is often determined by the plans and designs of non-engineers. These are planners, or to be accurate land use planners, many of whom are architects by profession. We also want to differentiate between traffic engineers and highway engineers, who in the Philippine setting are actually quite different. One common thing about many of them is that they are slow to adopt progressive ideas or concepts of road planning and design such as complete streets and road diets. The outcome of this stubbornness is the specter of road crashes that lead to fatalities and serious injuries. But then they are not solely to blame or who should take responsibility for the atrocious road safety situation. The ‘distance’ component of travel is very much a product of land use planning and land development as practiced in our country. For many if not most developments, architects and planners are the ones who call the shots for the roads and transportation in the proposals. Traffic engineers are involved later and if not progressive complicates the situation regarding safety. Thankfully, some local government units are becoming progressive and are more mindful of development proposals including implications to road safety. Hopefully, many things will change among those involved so we can improve travel safety.
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Safety or speed?
We start June by sharing a video on why safety and vehicle speed are incompatible:
I saw this video while browsing an article on “Dangerous by Design”. The article discusses a new publication where road designs are evaluated from the perspective of safety. Most of our roads have been designed with speed in mind. That is, how to facilitate the movement of motor vehicles to ensure they travel faster. Forgotten or, even worse, disregarded is the most important element of safety. Why do we widen roads or insist on higher speeds in populated areas or school zones? Such questions are not addressed directly or not answered at all by agencies in charge of planning, designing, constructing and maintaining roads and bridges. The same is true for agencies or units in charge of traffic regulations or management. The result not surprisingly is an increase in the number of road crashes, fatalities and injuries due to our roads being ‘dangerous by design’.
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On reducing driving and its inherent risks
Ever since the automobile was invented and eventually mass-produced, there has been an increasing risk associated with motor vehicle traffic. Laws, policies and regulations have also been influenced to favor the car rather than people. And so we now have what is termed as a car-oriented and dependent transportation system that seems so difficult to undo as most people appear to be enamored by the car. Owning a car (or even a motorcycle if you want to extend this idea of individual ownership) remains an aspiration to a lot of people.
Here is a link to the compact version of a comprehensive report by Todd Litman that presents and argues for a new paradigm where driving is considered a risk factor. There are data and a table comparing old and new traffic paradigms to help us understand the situation and what needs to be redefined or re-framed in order to achieve our safety targets or vision.
Litman, T. (October 20, 2022) “Driving as a Risk Factor: A New Paradigm,” Planetizen, https://www.planetizen.com/blogs/119287-driving-risk-factor-new-paradigm?utm_source=newswire&utm_medium=email&utm_campaign=news-10202022&mc_cid=beacdc2a04&mc_eid=9ccfe464b1 [Last accessed: 10/28/2022]
To quote from the article:
“Safer vehicles, roads, and driving may reduce crashes but achieve few other goals, and sometimes contradict them. Transportation demand management and smart growth policies increase safety in addition to helping to achieve other planning goals, and so can be considered win-win solutions.
More comprehensive safety analysis tends to support social equity goals. Many conventional safety strategies, such as larger vehicles with more passenger protection, and wider roads with fewer intersections, tend to increase walking and bicycling risks. In contrast, lower traffic speeds, TDM, and Smart Growth tend to improve safety, mobility, and accessibility for people who cannot, should not, or prefer not to drive.”
The key takeaway here should be that people should have the option of not driving at all in order to reduce the risks associated with driving as well as reduce congestion. A more comprehensive
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On animal – vehicle collissions
We feature a different type of road crash today – one involving wildlife and vehicles. This is not something new as I am sure you’ve seen all those road kills (usually cats or dogs) along many of our streets and highways. These don’t even include the frogs, birds and other animals that are killed by motor vehicle traffic. Here is an informative article on such crashes or collisions and what can be done to address them.
Skroch, M. (October 4, 2022) “The dreadful toll of wildlife – vehicle collisions – and what we can do about it,” Governing, https://www.governing.com/now/the-dreadful-toll-of-wildlife-vehicle-collisions-and-what-we-can-do-about-it [Last accessed: 10/10/2020]
To quote from the article:
“Advances in research technology over the past decade have revolutionized experts’ understanding of how wildlife move across landscapes and are now helping to resolve wildlife-vehicle conflicts that are rising due to increased development. One example is GPS collars that are affixed to big game, as well as other mammals and birds, and transmit electronic signals via satellite from some of the most remote regions in the U.S. to researchers throughout the country. This data captures exactly where and when animals move within large landscapes, enabling scientists and engineers to pinpoint where the construction of wildlife crossings — mostly overpasses and underpasses that help animals traverse highways — can most effectively improve motorist safety and facilitate animal migrations. Studies show that a well-placed underpass or overpass can reduce wildlife-vehicle accidents by over 90 percent, providing a high rate of return on federal and state investments in such structures.”
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On gender and transportation safety
There was a nice discussion among colleagues about which among male or female drivers were the safer motorists. My take based mainly on observations is that female drivers were safer or practiced safe driving and riding more than males. Road crash data should be able to validate (and perhaps support) this observation. My colleagues were also in agreement with this view. Here is an article providing some statistics from the US that clearly show female to be safer drivers and riders:
Egan, L. (August 17, 2022) “Road To Zero Fatalities: Male vs. female drivers,” KSLTV.com, https://ksltv.com/503038/road-to-zero-fatalities-male-versus-female-drivers/ [Last accessed: 9/2/2022]
Some quotables from the article/report:
“The girls are more teachable, they want to learn how to be a good driver,” he explained. “The boys really do think they already know how.”
In 2020, males accounted for 72% of all motor vehicle crash deaths and 92% of motorcyclist deaths, according to the institute’s analysis of data from the U.S. Department of Transportation.
In Utah, crash data from 2017 to 2021 showed that 85% of motorcycle crashes involved males, according to the Utah Department of Public Safety.
“Males are more prone to make riskier decisions and tend to be a little more thrill seeking,”
Again, we need to get the data and present these in a meaningful way. You can take the cue from the article above how data can easily be presented to provide insights to driver and rider behavior. More information or details (e.g., age, years of experience in driving/riding, etc.) can lead to even deeper analysis that will allow us to draw or formulate suitable measures to improve safety for everyone.
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Vaccines for road safety
If there is the current vaccination drive vs. Covid-19, there is also something like this for road safety. The International Road Assessment Program (iRAP) developed many tools and resources to address road safety issues. I am sharing the link to the Vaccines for Roads site of iRAP here:
Because Every Life Counts
It is always good to know about these resources whether you are a practitioner, a researcher. a teacher or perhaps an advocate of road safety. There are many examples here of interventions for various scenarios or conditions that will hopefully lead to safer roads for all.
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On how animals can safely cross highways
Here is a quick share of an article regarding animal crossings and roads/highways:
I thought the article was interesting not just because it featured animal crossings but because the very same ideas and design interventions may be adopted for humans as well. Indeed, there will be cost implications but that is only because we have been accustomed to designs that favor car use more than the movement of people. Perhaps we should rethink how we design infrastructure such as our roadways for them to be favoring active transport and employing more nature or environment-friendly features.
Caught (up) in traffic 