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On sharrows

The term ‘sharrow’ basically short for shared right-of-way and refers to lanes or roads that are ‘designated’ for all modes of transport including and especially non-motorized ones such as bicycles. It also refers to the lane markings. There have been some mixed experiences and opinions about sharrows; particularly referring to whether they are effective. Here’s an article from the director of technology of Smart Design, which is a strategic design and innovation consulting firm in the US that gives another opinion (an evidence-based one) about sharrows:

Anderson, J. (September 30, 2020) “Safer with sharrows?”, World Highways,

I guess the experiences in different countries vary according to several factors. Perhaps these include cultural factors that also relate to human perceptions and behavior? Education is also definitely a factor here aside from awareness. And we have to work harder on these and together, rather than play the blame game on this matter that relates to safety. How many times has the observation that Filipinos tend to regard road signs and markings as merely suggestions rather than guides and regulations?

On the efficiency of transportation – a crash course on transportation engineering concepts

There is an excellent article on the efficiency of transportation systems:

Gleave, J. (2019) Space/Time and Transport Planning, Transport Futures, [Last accessed: February 25, 2019].

It is highly recommended not just for academics (including students) but also for anyone interested in transportation and traffic. It’s like a crash course in transportation engineering with a lot of basic concepts in traffic engineering and traffic flow theory being presented for easy understanding by anyone. Enjoy!

Statement on the proposed emergency powers to solve transport and traffic problems

The National Center for Transportation Studies (NCTS) of UP Diliman submitted a statement to the joint Senate committees evaluating the proposal to grant emergency powers to the Philippines President in order to solve the transport and traffic problems in the country and especially in Metro Manila. Following is a copy of the one-page statement:

NCTS Statement on Emergency Powers 25Aug2016

TSSP 23rd Annual Conference Proceedings

The 23rd Annual Conference of the Transportation Science Society of the Philippines (TSSP) was held at the University of the Philippines (UP) Diliman last August 8, 2016. It was hosted by the National Center for Transportation Studies (NCTS), which for some time was practically inactive in its dealings with the society. The conference was a very successful one with more than 170 participants, mostly students from the undergraduate programs of Mapua Institute of Technology (MIT), De La Salle University (DLSU) and UP Diliman.

The Proceedings of the 23rd Annual Conference contains 22 technical papers, which I have already listed in a previous post showing the technical program for the conference. The link is to the current website of the TSSP hosted by NCTS. Those wishing to have copies of the papers may download them directly from the link. Meanwhile, those interested in the presentations should contact the authors. Their contact information are stated in the paper and it is ethical to get the nod of the authors for their presentation file as these still fall under what can be defined as their intellectual property. I am aware of people who tend to get presentation slides and then pass them of as their work when they use the slides or the data/information therein. There are proper ways for citations of references and sources but sadly such ways are not observed by many.

Some interesting (and required) readings on traffic engineering

Christmas breaks allow me to catch up on a lot of reading. The previous months comprising our university’s semester were spent preparing for lectures though I had to do some readings related to researches I am involved in. Browsing the net and social media, I came across 2 articles shared by an acquaintance. He is a very progressive planner who has extensively studied and written about the most relevant issues in urban planning, focusing on transport. A third article I found while reading one of the two. These were very interesting for me in part because they are thought provoking in as far as traffic engineering is concerned.

The author seems to call out traffic engineers in general but these articles should also be contextualized properly. The situations mentioned in the articles are to be found in cities in the United States and may not be applicable in other cities in other countries. Traffic engineers in Europe, for example, have been working on exactly the solutions being mentioned in the articles that would make streets inclusive and safe especially for pedestrians and cyclists. The same with Asian cities like Singapore and Tokyo.

In the Philippines, however, there is so much that we can learn from the articles. The mere mention of the design guidelines being used in the US betrays the flaws of highway and traffic engineering in the Philippines. The Philippines’ highway planning manual and other guidelines used by the Department of Public Works and Highways (DPWH) are heavily drawn from US references. Most highway and traffic engineers in the country are educated using curricula that use US textbooks and references. There are even civil engineering programs that use licensure exam review materials as their references! These exam materials are also known to be based on DPWH guidelines and manuals aside from problems “outsourced” or patterned after the Professional Engineer (PE) exams in the US. Few schools have progressive curricula that look to best practices that take into account the complexities of roads especially in the urban setting. Such ‘copying’ of American standards and practices in many cases do not consider Philippine (local) conditions and blind applications to our roads instead of proper adaptation often have lead to unsafe and inequitable roads.

The return of traffic signals at Katipunan

It’s been more than a decade since the MMDA implemented what was formally called the Grand Rotunda Scheme. To most, it will always be the U-turn scheme that was implemented all around Metro Manila. After seeing what seemed like success along roads like Commonwealth and Quezon Avenue, it was concluded that the U-turns were the answer to Metro Manila’s traffic woes or at least the part that’s blamed on signalized intersections. The perception by many at the time was that traffic signals were not working and caused so much congestion as evidenced by the long queues at intersections. This is not entirely false as intersections with in-optimal settings would definitely bring about congestion especially along corridors or networks where signals are not coordinated. It was, however, a generalization at a large scale and led to more experiments of opening and closing slots in order to determine which would be the most effective combinations. These experiments and their outcomes include drivers becoming more aggressive in order to maneuver ahead of others at the U-turn slots. Weaving has become the norm and in many cases have increased the risk of road crashes.

IMG09196-20140901-0625Traffic signals have been installed and the section of the median island has been removed across Ateneo’s Gate 3. This will become a three-leg intersections once again but I hope the signals will not favor Ateneo over through traffic along C5.

IMG09197-20140901-1339Traffic lights are already installed along the southbound side of Katipunan at the approach to the junction with Miriam College’s Main Gate. This will be a four-leg intersection as across Miriam is B. Gonzales Street that connects to Esteban Abada.

The signals are supposed to be operational starting September 13, which is a Saturday. Perhaps this is to try it out first during that weekend and for the MMDA to do some tweaks before the real deal that is traffic on Monday. But then how can you simulate traffic generated by the two schools in the area except maybe if there is significant enough traffic on Saturday? Did the MMDA or its consultants do some simulation using their computers and the VISSIM software they acquired many years ago? Or will we see more of the experiments as signals are fine-tuned according to the conditions along Katipunan?

We are hopeful that the signals along Katipunan will help improve the traffic along this very busy corridor. The results for sections of C5 from Libis (QC) to Ugong (Pasig) are promising and many people I know have told me that traffic has improved. Of course, this may also be partly due to the one-lane policy the MMDA has implemented for trucks. It’s never just one scheme or measure that will work wonders for Metro Manila traffic. It will always be a combination that will alleviate traffic woes in the metropolis. We’ll soon know what will become of traffic along Katipunan. We should, however, temper expectations at least for the 6:30 – 7:30 AM period during weekdays when traffic peaks in the vicinity of Ateneo and Miriam. The sheer volume of vehicles generated by the schools will overwhelm any system that is put up in the area. Nevertheless, for the rest of the day at least traffic flow should improve when signals are operational once again for Katipunan.


Among the things you get to observe at signalized intersections are the behavior of drivers given the setting of the traffic lights. While the cyclic transition from red to green to amber and then to red again seems routine and possibly trivial to many, it is an opportunity for traffic engineers to examine how drivers react to the lights. Among the most notable behavior are common violations like beating the red light and occupying the area within the yellow box despite full awareness that the exit is already full.

Then there are the not so obvious but risky habit of some drivers to beat the green light. That’s when a driver anticipates the green light and proceeds to move prior to the signal and before the intersection is clear of any vehicles or pedestrians that may have been caught in the change in signals. It is a practice that increases the probability of a road crash occurring as the clearance interval for vehicles whose paths may be in conflict is drastically reduced. This is a habit of many drivers who are familiar with the sequence of signals at an intersection and who know when its their turn for the green light.

In most cases, drivers and pedestrians are unaware of the length of time available for them to cross the street or intersection. There are no indications for when the lights will change and only familiarity would allow for drivers or pedestrians to estimate when it would be their turn to proceed. In Japan, many intersections play music during that tends to speed up when the signal will be changing. This audible indicator allows for both the blind and the busy to know whether it is safe to cross the street and if there is enough time to do so. It is also something that is probably taught to children for them to more easily know when it is safe for them to cross the street.

There is another innovation to traffic signals that is surely welcome to pedestrians and motorists alike but which may also have its disadvantages. I am referring to the countdown timer, which provides road users the information about the lengths of green and red signals (Note: Amber or yellow is usually fixed at 3 seconds.).  From the perspective of energy efficiency, such information may allow motorists to turn off their engines, usually done when one practices eco-driving, resulting in fuel savings. Meanwhile, drivers of vehicles approaching an intersection may be able to tell if there is enough time for them to do so, and if there isn’t enough time they may be able to slow down their vehicles to stop at the next red light. Countdown timers may also be a helpful tool for enforcement as the timers establish that a driver should be aware of the time. Thus, a driver can no longer reason with the apprehending officer that he/she was not aware of the remaining time for movement.

Pedestrians may also benefit from the knowledge of available time to make a safe crossing. This information should ultimately reduce the need for running in order to completely cross the street. The photo below shows the new countdown timer installed for the southbound through movement at the Katipunan Avenue (C5) – C.P. Garcia Avenue intersection.

One possible disadvantage would be that aggressive drivers may still try to beat the red light by speeding up upon knowing what amount of time is available for them. Another disadvantage relates to beating the green light as even those unfamiliar with the signal sequence will have the information of how much time remains before they can proceed. Thus, many driver and riders start revving up their engines and push on their gears to anticipate the green signal. You can even imagine the countdown timer being used as if it were ticking towards to start of a race.

Despite the disadvantages mentioned, countdown timers should prove to be more beneficial than detrimental in most situations. In fact, countdown timers like the ones already installed at intersections in Bonifacio Global City should enhance traffic safety provided that these devices are fully complemented by enforcers who would flag down motorists and pedestrians who would attempt risky actions in relation to the timing device. Of course, from the research perspective there needs to be a scientific assessment of the actual impacts of countdown timers much like the studies already conducted elsewhere to determine and even measure the effects of these devices on both motorists and pedestrians. Only then can we truly say if they do enhance safety and promote more efficient operations at a signalized intersection.

Traffic and flooding

Metro Manila and other cities around the country are again in the headlines because of flooding brought about by strong rains. Rains are not new to the Philippines and there are many articles (and blogs) that have been written about the history of flooding in the Philippines. Some even feature old photos or caricatures showing how life was during the Spanish and American periods when floods also occurred, probably due to similar strong rains brought about by the monsoons or by the typical typhoons that regularly visit the country during the wet season.

In those times many years ago, the subject of drainage has already been mentioned and there is evidence that certain infrastructure were constructed to address the problems of flooding. In fact, the esteros that we presently associate with informal settlers and garbage were man-made waterways that functioned as open channels that could alleviate flooding in times of heavy rains. These waterways also functioned as transport facilities as they were constructed wide enough for boats to travel along the network of esteros that also connected with the Pasig River. These were not so different as the waterways that are now being used in Bangkok that have significant commuter and even goods traffic. There are many photos of these esteros as they were back in the Spanish and American periods. There are even more recent postwar photos that allow for comparison with photos at present. Unfortunately, I cannot post these here as there may be IP issues involved. Nevertheless, one can use your preferred search engines to find and view these photos.

Through the years, however, these esteros have been neglected and, as more and more squatters came to construct their shanties above the channels and tons of garbage disposed of, they became clogged and thus resulting to flooding in many parts of Manila. The esteros, however, are not wholly to blame when the subject of floods come up every now and again. It is a fact that the drainage systems of Metro Manila and other Philippine cities are already quite antiquated and their designs cannot accommodate the amounts of rainfall experienced these days. This is the result perhaps of poor planning and even more due to the neglect of national and local governments. And so we now experience floods almost each time we have significant rainfall. In some areas, the floods do not recede until after the wet season is over. Such is the sad plight of many Filipinos who are reduced to prayers and tests of faith if only to assure themselves that things will improve – some day.

Meanwhile, other cities have engaged similar flooding problems head-on and have invested on solutions that have saved their cities from much of the costs due to damages brought about by floods. Among those cities is Kuala Lumpur in Malaysia where they constructed a tunnel that is usable as part of their drainage system as well as a highway. Kuala Lumpur’s SMART Motorway Tunnel is an example of an engineering solution that could help alleviate flooding in Metro Manila. It is quite costly, with construction amounting to about USD 514.6 million at the time of its completion in the first quarter of 2007 with construction starting about 4 years earlier in 2003. Much has been written about this infrastructure and its benefits. It has saved KL and Malaysia from potentially disastrous flooding so many times now since its opening. Was it worth it? No doubt our Malaysian friends with tell us it is and will continue to save them from more floods years from now. Thus, the cost of such projects can easily be justified and the return in investment will be quite quick given the costs of flooding that have been compiling these past years including 2009’s Ondoy (Ketsana). In fact, KL’s SMART Motorway Tunnel is part of its tollway system and was built using a public-private partnership (PPP) arrangement that is much like what the current administration is preaching.

Perhaps its not yet too late for Metro Manila and other Philippine cities? Maybe we should get our acts together in finding and contributing to solutions that also address multiple problems facing our cities in this era of climate change and extreme weather conditions.

Told ya so! And more irony

I was watching the news on TV after having dinner at home and caught one segment where the report featured an assessment of traffic schemes along Commonwealth Avenue. Prominently shown was an interview of the DPWH secretary where he is quoted relating the assessment of Australian and Korean experts about their assessment of safety along Commonwealth Avenue. What struck me about the assessment by foreign experts was that they were practically the same things pointed out by local experts from the NCTS and TSSP back in the day when Bayani Fernando was Chair of the MMDA. At the time, that agency was embarking on what the Chairman called the “Grand Rotunda Scheme” more popularly known as the U-turn Scheme that was to replace most of Metro Manila’s traffic signals with U-turn slots that were supposed to function much the same as roundabouts. This obsession with the U-turn as the ultimate solution to Metro Manila traffic culminated with the construction of the twin U-turn flyovers along C5-Kalayaan that was the subject of a protracted argument between the MMDA and the DPWH. From what I gathered in the news report, the DPWH and MMDA are currently discussing how to come up with an effective scheme for Commonwealth, showing that the two agencies are now quite receptive to alternatives and are keeping their options open, a flexibility that was absent in the past decade.

The Australian and Korean experts mentioned in the report are consultants for the International Road Assessment Program (iRAP) that is to be implemented through the DPWH and is supported by the road safety program of the World Bank. I have mixed feelings about the reception of their assessment particularly because I have seen the same thing happen where the so-called neutral or objective assessment of foreign experts seem to weigh more than those of local experts.

Don’t get me wrong about this feeling as I am also truly happy that their assessment is the same as those made by local experts early last decade and repeated to whomever had the time to listen or pay attention to their assessments. In fact, I am on the Steering Committee of this iRAP project and would be eager to see how the souped-up van that will run through more than 3,000 kilometers of Philippine roads will assess these infrastructure according to the star rating system iRAP has developed and calibrated to become an international standard for road safety assessment. Perhaps the outcomes of this project will allow us to compare with other countries’ roads including those in Malaysia, which the DPWH secretary mentioned earlier this year would be the benchmark for the Philippines. I am hopeful that the outcomes of iRAP Philippines will allow the DPWH and other agencies concerned including the tollway operators to improve the safety features of our highways. After all, the bottomline is not really who made the assessments or the recommendations but whether these would be implemented at all, and if we are able to save lives in the end.

Some issues on walkability in the Philippines

I have written about walking in the past (No Car? No Problem!), and it was mainly about a personal experience I had commuting home one evening. At the time, I had already made the observation that we are generally lacking for pedestrian facilities. We do have sidewalks but most are too narrow for the typically high volume of pedestrian traffic. In cases where there are sufficient width or space, sidewalks are often occupied by vendors. In commercial areas, establishments also have a tendency to encroach on pedestrian space thereby constricting the walkways. This is the predicament in most, if not all, Philippine cities and the result is often that pedestrians are forced to walk along the carriageway, using space that is supposed to be for motor vehicles and effectively causing congestion due to the reduced road capacity. Such are issues pertaining to walkability that touches mainly on the safety, mobility and accessibility aspects of walking.

In rural areas and particularly along national highways, there are practically no pedestrian facilities unless one considers highway shoulders as appropriate for walking. As such, one will most likely find people walking along the shoulders or, should it be the wet season and these shoulders happen to be muddy, along the carriageway. It is not uncommon also to see children walking along the highways since many schools are located along the roads. Such situations often put children at risk, thereby magnifying their vulnerability to becoming victims of road crashes.

Another vulnerable group are senior citizens, who, despite their age, can still be very active and are entitled to mobility just like any person. They, too, deserve facilities that will keep them safe from risks such as wayward public transportation or reckless drivers and riders. Then there are also those who are physically-challenged, people with disabilities who, despite their physical limitations, also have the right to move about. In fact, there are laws with provisions requiring public facilities to be designed according to the needs of persons with disabilities (PWDs). Sadly, pedestrian facilities in Philippine cities generally do not incorporate ramps, guides and other devices that would allow for efficient movement of PWDs.

Crossings are also a big issue considering the statistics of pedestrian involvement in road crashes. Of course, there are two sides of the coin here where, on one hand, hard-headed people still cross at inappropriate locations or say at street-level when there is an overpass or underpass nearby. Such incidences of jaywalking are quite prevalent in urban areas, betraying a lack of discipline that is often in combination with weak traffic enforcement. On the other hand, there are pedestrians crossing along designated locations like zebra crossings but are placed in harm’s way as motorists do not give way.

Heading to the airport last Maundy Thursday to fetch my wife, I took Marcos Highway and saw the many people walking to Antipolo Church, a popular pilgrimage site for Filipino Roman Catholics during the Holy Week as well as the month of May when the feast of Our Lady of Peace and Good Voyage is celebrated. They came from all over Metro Manila but mostly from Pasig, Cainta, Marikina and Quezon City.  It was around 10:00 PM and due to the Holy Week, there were very few public transport (and vehicles in general) along the highway, which is a major corridor to the east. Most of them had to walk along the carriageway considering the ongoing construction work along Marcos Highway for a major drainage and pavement project. Considering the volume of people, they has practically occupied one lane (the outermost) of the highway. Fortunately, because there were few vehicles, the people didn’t have to worry much about being sideswiped as they walked.

I could imagine a similar case along Ortigas Avenue, which is along the original way to Antipolo Church. Perhaps there were even more people walking along that road considering that it passes through densely populated areas of Mandaluyong, Pasig, Cainta and Antipolo as well as the avenue being most accessible to people coming from Taguig, Makati, San Juan and Manila. The Way of the Cross along Ortigas Avenue has been enhanced with the construction of stations along the route that can be used as guides, especially by those who are unfamiliar with the pilgrimage. That way is also wanting for pedestrian facilities and often sidewalks are ill-designed and may even have electric posts impeding the flow of traffic.

To me, the solution to such issues on walkability is quite clear and does not require more than common sense. Obstacles along walkways, for example, need to be removed to ensure that there will be space for walking and ensuring smooth traffic flow. The MMDA deserves a lot of credit for waging an aggressive campaign during the time of Bayani Fernando, when he implemented a “sidewalk clearing” program that effectively returned space to pedestrians that were taken from them by vendors and establishments. The latter mostly did so in violation of the building code that is quite common in most downtown areas. Electric posts also need to be relocated and such may be coordinated with power/utility companies who are responsible for their installation.

On the technical side, there is a need to revisit design guidelines, if any, pertaining to pedestrian facilities. The National Building Code actually has provisions for designing sidewalks but there are none, to my knowledge, about designing overpasses and underpasses. There are no criteria currently being used to determine, for example, the suitable locations for overpasses and to estimate their capacities based on the principles of traffic flow. This, considering that there are actually level of service (LOS) criteria for walkways and other facilities catering to pedestrians. These design guidelines should clearly incorporate safety and accessibility so that the resulting facilities will be for the inclusive use of all.

On the enforcement side, there is nothing new and no surprises that the recommendation would be to have firm, consistent and aggressive enforcement of traffic rules and regulations. For this I may sound like a broken record but it only goes to show that we have not progressed much in this aspect of traffic management. The ningas cogon approach must go and programs should also be directed against those impeding pedestrian flow (e.g., vendors setting up on overpasses) as well as those whose behavior endanger pedestrians (e.g., reckless, undisciplined drivers).

I am optimistic, though, that with the combined efforts of many advocates for road safety, we may eventually be able to improve walkability in most cities in this country. For one, there are already several LGUs who have programs with a vision for them to be a walkable city. Among these are Marikina and Makati in Metro Manila, and San Fernando in La Union. More will hopefully follow the examples of these cities and, who knows, one day perhaps we can walk safely wherever and whenever we wish to do so.