Caught (up) in traffic

Home » Research (Page 2)

Category Archives: Research

SPRINT principles for bicycles

Here is the link to how to improve your city’s or municipality’s bicycle facilities based on scores guided by the SPRINT principles: https://cityratings.peopleforbikes.org/create-great-places

SPRINT stands for:

S -Safe Speeds

P-Protected Bike Lanes

R-Reallocated Space

I-Intersection Treatments

N-Network Connections

T-Trusted Data

The site provides links and examples of good practices of actual bike projects in the US. Many of these can be replicated or adapted to Philippine conditions. These are something that the active transport section of the Department of Transportation (DOTr) should look into and perhaps provide a reference for developing and improving bicycle facilities in the country.

On the idea of congestion pricing

I purposely titled this post to include the word ‘idea’ as congestion pricing is still very much like that in the Philippines. It is a reality in some part of the world particularly in Singapore where its Electronic Road Pricing (ERP) has evolved and improved over the years. Its success though seems to be an exceptional case that has not been replicated elsewhere where conditions are not exactly like the city state’s.

Here is an article that recently came out from The Washington Post about the New York Governor’s decision to backtrack on the proposed congestion pricing initiative in New York City:

McArdle, M. (June 12, 2024) “People hate traffic. They also hate this great idea to clear it,” The Washington Post, https://www.washingtonpost.com/opinions/2024/06/12/congestion-pricing-great-idea-people-hate/ [Last accessed: 6/14/2024]

To quote from the article:

“Roads are a scarce good; you can fit only so many cars on a road at one time, and fewer if you would like those cars to go somewhere. When roads are “free,” we are forced to fall back on a more costly and inefficient strategy: sitting in traffic. This wastes valuable human time and inflicts noise and pollution on everyone nearby. Far better to charge a modest price that inspires some drivers to carpool and others to take public transit or shop nearer to home, until supply and demand are balanced and traffic flows easily…

In political disputes, a discrete group facing highly concentrated costs often defeats a larger public interest that conveys a small individual benefit to everybody — such as being able to move around the city faster when you really need to. This is particularly true in the American system, which is designed to empower angry minorities. And it’s especially true when they’re abetted by status quo bias and a sympathetic majority, as in this case.

Complain all you want about selfish suburban drivers or the Metropolitan Transit Authority’s bloated cost structure or Hochul’s cowardice; the biggest obstacle to congestion pricing is that almost two-thirds of New York City residents have told pollsters they oppose it — in a city where less than half of all households even own a car. A more technocratic, less democratically responsive government might have been able to ram it through, and perhaps in time everyone would have come to like it. But in fractious America, with all its political veto points, congestion pricing is doomed by the reality that people hate slapping prices on things — especially if they have to pay them.”

There is a congestion pricing proposal in Baguio City and we don’t know yet how this will go. I don’t have the details yet except that a private company whose core business is tollways is involved. Will this be a model or a proof of concept? Or will it just go the way of a typical tollway where users are those who are willing to pay and which would eventually congest if most of the current users pay and use it anyway? Will the funds generated be used to develop a more efficient transport system for Baguio, eventually leading and contributing to less congested streets? That would also mean eventually less revenues from the congestion pricing scheme and probably lead to it being unnecessary.

On the impact of bike lanes on motor vehicle traffic

With the news that bike lanes will be removed along major roads including, most recently,  I share some findings from the US about a decrease in traffic speeds when there are protected bike lanes. The decrease in speeds are associated with a reduction in road crashes, ergo safer streets.

McPherson, K. (June 3, 2024) “Traffic Speeds Decrease When Bike Lane is Present,” Rutgers.edu, https://www.rutgers.edu/news/traffic-speeds-decrease-when-bike-lane-present [Last accessed: 6/8/2024]

To quote from the article:

“They found that the presence of the delineated bike lane made a difference: a 28 percent reduction in average maximum speeds and a 21 percent decrease in average speeds for vehicles turning right. For those heading straight and not turning, a smaller speed reduction of 8 percent was observed. In addition, drivers moving at a perpendicular angle to the bike lane did not slow down.

Marking the bike lanes with cones as a clearly delineated space was more effective at reducing speed than a painted-only bike lane. The painted-only bike lane was associated with a smaller speed reduction of between 11 percent and 15 percent, but only for drivers turning right.

Younes hypothesized that drivers slow down when they see a bike lane marked with the cones because the driving lane is narrower and requires more concentration, and it’s easier to notice cones or planters or some other space delineator than it is to spot painted lines on the road surface.”

Of course, one major element that was probably not considered in their studies is the presence and behavior of motorcycle riders. Motorcycles here frequently enter and use bike lanes whether protected or not. Often they crowd out bicycle users leading to situations where riders of motorized and non-motorized 2-wheelers come into conflict. Still, it would be nice to have a study to determine not just whether there are similar outcomes here but to what extent as well as how motorcycles figure in the study.

Extreme turbulence during air travel

Transport-related news last week included a report about a Singapore Airlines B777 jet flying to London from Singapore that had to make an emergency landing in Bangkok due to extreme turbulence experienced. Many people were seriously injured when the plane suddenly ascended (“tilted up” as some news reports state) and then abruptly descended, resulting in people being tossed up and hitting the compartments above their seats. Obviously, these passengers were not wearing their seatbelts at the time. Otherwise, they would have been restrained to their seats. It is likely that the turbulence was not anticipated by the pilot as they usually advise passengers to put on their seat belts if turbulence was expected at any time during a flight.

The incident raises concerns about extreme and sudden turbulence occurring during flights. I guess this may happen anytime and aircraft instruments may not be able to tell the crew about an impending incident like this. Will such an incident have a significant impact on air travel? Perhaps not if these incidents remain rare. There should be records and monitoring of factors or elements leading to such incidents in order to establish the likelihood of these happening. Incident records will also show if there is an increasing frequency as well as the number of people killed and injured. Such information would be vital as more people use aviation for travel and there are more aircraft activity around the world.

As a precaution, it is good practice not to remove your seatbelt while seated in flight. If it’s tight, then loosen it. At least you have some restraint in case of incidents where the aircraft encounters sudden turbulence.

Article share: Picking it up as we go: how transportation agencies can learn from university research

Here’s a quick share of an article on the JTA Research Lab. This is a good example of how transportation agencies can learn from university research and also how they can collaborate or cooperate with academe to formulate solutions to various transport problems or issues.

JTA Research Lab has been created to identify critical transportation policy questions, and get academics to help solve them. Pencils sharpened? Nathaniel P. Ford explains…

Source: Picking it up as we go: how transportation agencies can learn from university research

Article share: on making more affordable neighborhoods

I’ve been commenting about how transportation cannot be isolated and the need to relate it to other factors such as housing or home location choice. The latter though is also affected by other factors as well that affect the affordability of homes near the city centers or CBDs where workplaces and schools are located. The result of course is sprawl or the encouragement of sprawl. Private companies take advantage of this or contribute to this ‘encouragement’ by developing land farther away from the center. Thus, for Metro Manila’s case, many people reside in the peripheral provinces of Bulacan, Rizal, Laguna and Cavite. There are even those who choose to reside in Pampanga, Bataan and Batangas.

Kayatekin, C.S. and Sanmiguel, L.U. (April 16, 2024) ” ‘Urban form’ and the housing crisis: can streets and buildings make a neighborhood more affordable?” The Conversation, https://theconversation.com/urban-form-and-the-housing-crisis-can-streets-and-buildings-make-a-neighbourhood-more-affordable-224108 [Last accessed: 4/23/2024]

Quoting from the article:

“Our main finding was that the bottom-up districts we looked at had, overall, more small-scale apartments. The reason is simple: they had more small-scale buildings, built on small-scale plots. Once divided into apartments, this produces small apartments – homes in the bottom-up areas were 10% to 23.1% smaller than their top-down counterparts. This also made their real estate markets for small homes more competitive, and therefore more affordable.

However, our study showed there is nothing inherently magical about bottom-up areas. Their more intricate housing stock has little to do with the layout of streets and blocks, and a lot to do with how that land is built upon.

Plot size appears to be the deciding factor: the districts with greater numbers of small buildings built on small plots supported a denser and more affordable housing stock, regardless of whether they were top-down or bottom-up.

Older bottom-up areas seem to naturally lend themselves to having more small-scale plots. This is likely due to the incremental development of these areas, and the complex land ownership patterns that developed as a result. However, there is no reason why a top-down area cannot be designed to replicate these characteristics.”

30th Conference of the Transportation Science Society of the Philippines

I am sharing here the First Call for Papers for the 30th Annual Conference of the Transportation Science Society of the Philippines (TSSP). The conference will be held in Iloilo City almost to the day of the last time it was held there in Sept. 12, 2014.

Information on past conferences may be found here: https://ncts.upd.edu.ph/tssp/conferences

29th Annual Conference of the TSSP

The Transportation Science Society of the Philippines (TSSP) held its 29th Annual Conference today, December 7, 2023. Following is the program for the conference, which featured a panel discussion in the morning and technical sessions in the afternoon.

This was the first mainly face-to-face or in-person conference for the society since 2019. Previously, the conferences were online. As reported in the concluding part of the program, there were 84 participants who showed up at the venue while there were 30+ participants who were online via Zoom.

There were a couple of awards at the conference. These were the Best Paper Award and the Best Presentation Award. The Best Paper Award, based on the scores garnered from the blind review of the papers went to:

Maria Belen Vasquez and Jun T. Castro of UP Diliman for their paper entitled “Exploring Travel Patterns of Mobility of Care in Guiuan, Eastern Samar: Assessment of Gender and Sociodemographic Factors Using Spatial Analysis”

There was a tie for the Best Presentation Award. The two were Ms. Vasquez for the presentation of the paper on the Mobility of Care in Eastern Samar, and Mr. Erris Sancianco for the presentation of a paper he co-authored with Noriel Christopher Tiglao, Niki Jon Tolentino, Gillian Kate Hidalgo, Mary Joy Leanda, and Lester Jay Ollero entitled “Evaluating the Fuel Efficiency and Eco-Driving Potential of the EDSA Carousel using On-Board Diagnostics (OBD) and Mobile Crowdsourcing“. These papers will likely find their way to the Philippine Transportation Journal’s next issue.

Though it was not announced, a likely venue for the next conference will be Vigan, Ilocos Sur in the Northern Philippines. The likely host will be the University of Northern Philippines, the premier state university in that province. Previously and most recently, the conference was held in Cebu City (hosted by the University of San Jose-Recoletos) in 2019 and before that in Cagayan De Oro City (hosted by Xavier University) in 2018. TSSP was already organizing the 2020 conference when the pandemic struck and the country went on a lockdown. That conference was supposed to have been held in Baguio City in Benguet, and to be hosted by St. Louis University.

More information on the conference may soon be found at the TSSP’s official website: https://ncts.upd.edu.ph/tssp/

 

 

 

On walking and running for health

Here is a quick share of an article on walking and running from the New York Times:

On micro mobility use of low-income people

We conclude September 2023 with another article share. This time it is about how low-income people use micro mobility.

Wilson, K. (September 20, 2023) “Study: How Low-Income People Really Use Micromobility,” StreetsBlog USA, https://usa.streetsblog.org/2023/09/20/study-how-low-income-people-really-use-micromobility [Last accessed: 9/30/2023]

To quote from the article:

“Low-income people are using shared micromobility a lot like they use public transit, a new study finds — and researchers think cities should thoroughly embrace (and subsidize) the mode as part of the larger ecosystem of buses and trains.

Researchers at Monash University, using survey data from micromobility giant Lime users across all income levels in the U.S., Australia, and New Zealand, dug deeper into how low-income people uniquely use the company’s vehicles.

Participants in the Lime Access program, which grants discounts of around “70 or 80 percent” to riders who qualify, were significantly more likely to list essential reasons like “shopping” for groceries (35 percent) and “commuting” (31 percent) than non-Access riders, 11 and 21 percent of whom rode to complete errands or go to work, respectively.

The discount recipients were also highly unlikely to go use bikes and scooters for non-essential reasons like social outings (12 percent), “joy-riding” (9 percent) or exploring (2 percent), quashing the stereotype that all micromobility trips are spontaneously generated. And a whopping 44 perccent of their trips connected to a traditional transit ride, compared to just 23 percent of people who paid full price.ago

Perhaps the most surprising findings, though, were riders’ qualitative responses about what micromobility meant to them, and how their lives were made better by having access to affordable ways to get around without a car. Calvin Thigpen — director of policy research for Lime and co-author of the report — says he was particularly moved by the number of riders with invisible disabilities who said Lime Access helped them get where they needed to go, even when local transit schedules didn’t meet their needs.”

The study was made in the First World (i.e., US, Australia and New Zealand) so while the methodology is sound, the subjects (i.e., what they defined as low-income) are not quite the same as low-income people in low to medium-income countries. The poor in the latter countries have more difficult lives but then these countries may already have the modes for them to be mobile – paratransit. Motorized tricycles, pedicabs and motorcycle taxis have been operating in these countries way before the arrival (or definition) of micromobilities.