Causes of congestion – road crashes and shockwaves
I noticed that a previous post on common causes of congestion is popular among those who read this blog. The causes mentioned there focused on the lack of discipline among pedestrians and motorists. Their behaviour (e.g., commuters standing in the middle of the road to get a jeepney or UV Express ride, jeepneys and UV Express stopping in the middle o the road to load/unload passengers, etc.) often lead to congestion as they effectively reduce road capacities.
Another major cause of congestion are road crashes. They don’t have to be fatal crashes as the road capacity reduction caused by stopped vehicles is enough to cause congestion along the road including traffic along the opposite direction. The latter phenomenon, if we can categorise it as such, is due to the inquisitive nature (i.e., uses) of people. Traffic approaching the crash site typically slows down as drivers check what happened. Following are some photos I took as we approached a crash site atop the Marcelo Fernan Bridge connecting the Islands of Cebu and Mactan. Note the build-up of vehicles behind the crash involving 3 vehicles.
Road crash involving 3 vehicles in the middle of the Marcelo Fernan Bridge in Cebu
The resulting congestion behind the crash site
Another view of the vehicle buildup upstream of the crash
Such events are typical causes of congestion and can actually be analysed using traffic flow theory involving waves in traffic. A generally normal flow of traffic (before the incident) is disturbed by the crash, which is assumed to be an isolated event. This results in a change in the traffic characteristics (flow, speed and concentration of vehicles) triggering a shockwave. The shockwave moves backwards and manifests through the chain reaction of drivers hitting their brakes in succession to slow down due to the incident. As such, it is possible to determine how long the build-up of vehicles would be upstream of the incident location.
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On the Ortigas Avenue counter-flow scheme again
Here are some more recent photos of the morning traffic congestion and counter-flow scheme along Ortigas Avenue. The counterflow scheme starts at the approach to the Manggahan Channel Bridge and ends at the approach to C-5 right after the Rosario Bridge. This counter-flow scheme has been used by Pasig, as far as I can remember, since the early 1980s. Ortigas Avenue is one of those roads where the directional distribution of traffic very pronounced for the peak direction.
Vehicles crowding towards the counter-flow lane on the eastbound side of Ortigas Avenue. Traffic along this lane is moving, unlike the standstill you will likely experience along the westbound side. This is particularly true at the bridge where buses and jeepneys occupy two lanes and stop for long periods to get passengers. Congestion is exacerbated by vehicles coming out of the residential development in the area. Pasig and MMDA traffic enforcers fail miserably at their duties here. Perhaps this is a job for the PNP-HPG?
The effort of positioning towards the counter-flow lane is worth it as traffic moves faster here. The argument for counter-flow lanes (or zipper lanes as they are also called) is based on the availability of capacity along traffic lanes of the opposing direction that can be used to optimize utility of these unused lanes (i.e., off-peak direction) by peak traffic. This is a classic transport systems management scheme directed towards efficient and optimum use of existing facilities.
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Local papers presented at the EASTS 2015 conference – Mapua Institute of Technology
Mapua Institute of Technology (MIT) has a relatively young program under its School of Civil Engineering. This is led by their Dean, Dr Francis Aldrine Uy, who is also active with the Philippine Institute of Civil Engineers (PICE). Mapua has been aggressive the recent years in presenting and publishing papers in transportation engineering and planning. Following are the papers from the MIT:
- Integrated Non-Motorized Transportation System For A Sustainability Oriented Intramuros [Francis Aldrine Uy]
- A Study on the Effectiveness of Eco-Mobility Component: E-Jeepneys in Makati City [Francis Aldrine Uy]
- Comparative Study of the Effects of Fuel Sources (Diesel, Gasoline and Autogas) in Public Transportation in Metro Manila on Price, Emission and Health Issues [Francis Aldrine Uy]
- Determinants of Demands of Pasig River Ferry Service [Francis Aldrine Uy]
- Determination of Cost Impact using Mathematical Model Comprising City Logistics to Quick Service Restaurants in Metro Manila [Francis Aldrine Uy]
- Development of Evacuation Plan by Utilizing Transportation Modeling in the City of Borongan, Eastern Samar [Riches Bacero]
- Operational Performance Analysis of Median U-Turn Intersections as Traffic Control Facility in EDSA [Riches Bacero]
- Community Perception on Trans-operability of Intramuros [Riches Bacero]
- Paradigm Shift Strategy of Inclusive Mobility: The Applicability of Bus Rapid Transit along Commonwealth Avenue [Riches Bacero]
- Evaluation of Strontium Aluminate in Traffic Paint Pavement Marking for Rural and Unilluminated Roads [Riches Bacero]
- Study on the Impact of the Construction Activity of Skyway Stage 3 on Traffic Conditions along Osmeña Highway and San Andres Street [Geoffrey Cueto]
- A Design for Silver Star Integrated Green Bus Terminal [Geoffrey Cueto]
- Proposed Diversion Road to Improve Traffic Movement of Commercially Developed Areas in Bacoor, Cavite [Geoffrey Cueto]
- Establishing the City Logistic Concept in Improving the Freight Distribution in Metro Manila [Geoffrey Cueto]
- An Analysis on the Accessibility Level of Public Transit for Persons with Disability: In care of Light Rail Transit (LRT 1) [Geoffrey Cueto]
- Design and Development of the Puerto Princesa Airport Passenger Terminal [Jocelyn Buluran]
- Design and Development of Passenger Terminal at Batangas Port [Jocelyn Buluran]
- Design and Development of Passenger Terminal Extension of Clark International Airport [Jocelyn Buluran]
- Determinants of “Travel with Dignity” of Passengers of MRT3 [Jocelyn Buluran]
- Integrating Sustainable Non – Motorized Public Transport in the City of Manila, Philippines Through Analytic Hierarchy Process (AHP) [Jocelyn Buluran]
My only comment about certain papers in the list is that many do not seem to be research papers and definitely more on the practice (i.e., design) side than the academic. I can say this based on the presentations made that I was able to attend as well as the papers themselves in the proceedings of the conference that I was able to browse. Still, Mapua has very good potential to come up with good papers from the prolific Dr Uy and his young faculty members led by Engr. Riches Bacero.
The current President of Mapua, Dr Reynaldo Vea, is also the current President of the Transportation Science Society of the Philippines (TSSP). Dr Vea was formerly Dean of UP Diliman’s College of Engineering and Officer-in-charge of UP’s National Center for Transportation Studies (NCTS). His specialty is on maritime transport as he has a degree in naval architecture.
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Proposals for EDSA and some alternate roads
The hellish traffic congestion along EDSA and other roads in Metro Manila spawned a bunch of ideas for alleviating congestion. Among those that were offered as solutions are the following:
- Odd-Even Scheme – suggested by the Philippines President himself in a speech delivered in Mandaluyong City
- Car-pooling (and HOV lanes) – suggested by the DPWH Secretary in another forum
- Bus Rapid Transit (BRT) and/or express bus – proposed and being studied by the DOTC
What seems to have been forgotten was a proposal to have two lanes of EDSA, one on either direction, devoted to bicycles. This proposal now seems to be the most viable compared to the above three and could have the potential for major behaviour change towards a departure from motor vehicle use. Cycling along with walking does not require fuel and these modes also promote healthy lifestyles. Also, this could become the ultimate example for road diets, which can also be applied along other roads as well. What sounds or reads like an outrageous idea (i.e., bicycle lanes along EDSA) might just be revolutionary and result in what could be a tipping point for sustainable transport in the midst of traffic mayhem.
EDSA has become the proverbial battleground representing the war with traffic congestion. However, EDSA is just one part of our arterial network comprised of circumferential and radial roads. There is also C-5 (also known for its sections – Katipunan, E. Rodriguez, C.P. Garcia), which is also a very congested road but along which there are few fixed route public transport services. It is a primary alternative route (to EDSA)for people traveling between the northern and southern halves of Metro Manila. It also serves as a collector and distributor, being connected with major radial roads like Aurora Boulevard, Ortigas Avenue and Shaw Boulevard as well as to the South Luzon Expressway. C-5 is a major truck route, however, and so carries a lot of heavy vehicles during the permitted times under the truck ban scheme being implemented in Metro Manila. C-5 is already ripe for a mass transit system and should have one along it. The quickest to put up would be a bus system on exclusive lanes. Strategically though, a rail transit line (likely elevated) should already be planned and implemented and with as seamless as possible connections to current and future lines along major corridors.
There are other routes that can be considered which I think have been overlooked (too much focus on EDSA?). C-6, for example, badly needs to be improved and this has started but is being implemented at a slow pace. This could have significant positive impacts on traffic coming from the east (towns of Rizal province) that are bound primarily for Makati and BGC. But then there also has to be a good road bypassing the narrow and already congested streets of Taguig and Pateros that are currently the only roads connecting C-5 and C-6. The roads on the Rizal side (attention: Cainta and Taytay) also need to be improved including Highway 2000 and the Barkadahan Bridge. Perhaps the Rizal Provincial Government should also get involved in this as such routes are in the best interest of Rizalenos. And then there is also the highly urbanized city of Antipolo that is a major destination and already is the 7th most populous city in the country, whose residents also use this route, which is often a faster option to Ortigas and C-5 despite the poor conditions of roads.
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Local papers presented at the EASTS 2015 conference – De La Salle University
De La Salle University (DLSU) has a strong program in transportation engineering and planning. This program is under its Department of Civil Engineering and led by Dr Alexis Fillone. Following is a list of papers from DLSU:
- Mode Shift Behavior of Bus Passengers to Rail System under Improved Rail Conditions [Alexis Fillone & Germaine Ann Dilay]
- Evaluating Proposed Transportation infrastructure Projects in Metro Manila using the Transport Co-Benefit Analysis [Alexis Fillone]
- Inter-Island Travel Mode Choice Analysis: Western Visayas Region, Philippines [Nicanor Roxas Jr & Alexis Fillone]
- Revisiting Volume-Delay-Functions Used in Transport Studies in Metro Manila [Jiaan Regis Gesalem & Alexis Fillone]
- Characterizing Bus Passenger Demand along Epifanio de los Santos Avenue (EDSA), Metro Manila [Sean Johnlee Ting, Kervin Joshua Lucas & Alexis Fillone]
- Optimized Bus Schedules in Epifanio Delos Santos Avenue (EDSA), Metro Manila Using Fuzzy Rule-Based System [Alexis Fillone, Elmer Dadios & Ramon Intal]
- Opinion Survey about Pedestrianization of Heritage Sites in the City of Iloilo, Philippines [Alexis Fillone & Frederick Sosuan]
- Factors Influencing Footbridge Usage Along Epifanio Delos Santos Avenue (EDSA), Metro Manila [Aaron King, Rigel Cadag, Jireh Despabiladeras, Rei Tumambing & Alexis Fillone]
- A Compact Scheduling and Revenue Estimation Spreadsheet for Bus Operators [Raymund Abad & Alexis Fillone]
- Adaptive Driving Route of Busses along Epifanio de los Santos Avenue (EDSA), Metro Manila, using Fuzzy Logic [Alexis Fillone, Bernard Yasay & Elmer Dadios]
I thought DLSU could have published more papers in this conference. I was actually surprised that all the papers are practically attributed to Dr Fillone considering his co-authors are mostly his students. But then there are only 2 to 3 faculty members who are doing transport research in DLSU and Dr Fillone is the most involved and prolific among them in terms of published research outputs.
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Local papers presented at the EASTS 2015 conference – University of the Philippines
There were a lot of technical papers from Philippine universities that were presented in the recently concluded 11th International Conference of the Eastern Asia Society for Transportation Studies (EASTS 2015). In the interest of dissemination, I will be featuring a list of papers produced by leading universities in the Philippines that are doing studies on transportation. Following is a list of papers from University of the Philippines Diliman that were presented at the EASTS 2015 held in Cebu City last Sept. 11-13, 2015:
- Innovative Collection of Road and Traffic Data for Road Safety Audit (Aileen Mappala & Ricardo Sigua)
- Study on Safety of Railway/Highway Grade Crossings in the Philippines (Albie Clarito, Beverly May Ramos & Ricardo Sigua)
- Instantaneous Fuel Consumption Models of Light Duty Vehicles and a Case Study on the Fuel Consumption at Different Traffic Conditions in Metro Manila using Shepard’s Interpolation Method (Ernesto Abaya, Karl Vergel, Ricardo Sigua, Edwin Quiros & Jose Bienvenido Biona)
- Development of Drive Cycles and Measurement of Fuel Economies of Light Duty Vehicles in Metro Manila (Ernesto Abaya, Karl Vergel, Ricardo Sigua & Edwin Quiros)
- Selection of Metro Manila BRT Corridors Using Multi- Criteria Assessment (Ricardo Sigua & Cresencio Montalbo, Jr.)
- An Assessment of Walkability in a Medium-Sized Philippine City (Hilario Sean Palmiano, Sheila Flor Javier & Jose Regin Regidor)
- Traffic Noise Measurement, Perception, and Modelling in a University Campus (Hilario Sean Palmiano, John Carlo Villar & Michelle Monelle Quilatan)
- Assessment of Metro Manila Bus Fare Computation (Sylvia Chavez & Hilario Sean Palmiano)
- Estimating Road Roughness Conditions Using Ubiquitous Smartphones and Geographic Information Systems and its Application to Road Network Planning in the Philippines (Joel Cruz & Jun Castro)
- Fuel Economy and Public Utility Jeepneys Using 2% and 5% Coco-Metyl Ester (CME)-Diesel Blends (Edwin Quiros & Karl Vergel)
- Comparison of Fuel Economy of Fuel and Operating Characteristics of Diesel and Auto-LPG Jeepneys through On-Road and Vehicle Tests (Edwin Quiros, Karl Vergel, Ernesto Abaya, Ervin Santos & Jose Gabriel Mercado)
- Challenges of Urban Transport Development in Metro Manila: A look back at the last 40 years (Maria Sheilah Napalang & Jose Regin Regidor)
- An Assessment of the Public Necessity Concept for Estimating the Requirements for Public Transport Vehicle (Arnel Manresa, Karl Vergel & Jose Regin Regidor)
- State of Pavement Engineering in the Philippines and Implications on the Economic Life of National Roads (Maria Sheilah Napalang, Jose Regin Regidor & Nathaniel Diola)
- Planning Metro Manila’s Mass Transit System (Ricardo Jose, Daniel Mabazza, Jose Regin Regidor, Marco Stefan Lagman & Jonathan Villasper)
- Evaluation of Compliance of Dimensions and Selected Systems and Components of Customized Local Road Vehicles (CLRV) with Vehicle Regulations and Standards (Karl Vergel, Rachel Habana, Nonilo Peña, Loreto Carasi, Albert Mariño & Alorna Abao)
- An O-D Approach of Estimating Energy Demand and CO2 Emission for the Luzon Road Transport using Inter- Regional Passenger and Freight Flow Data (Marloe Sundo & Karl Vergel)
- Dignity of Travel: BRT Development in the Philippines (Cresencio Montalbo Jr & Colin Brader)
- Mending a Metropolis – Understanding Passenger Demand Across Metro Manila To Improve Road Transit (Nicholas Greaves & Cresencio Montalbo Jr)
- Accident Hotspot Mapping in Quezon City: The case of Katipunan Avenue (Jerome Ballarta, Nelson Doroy, Ishtar Padao & Cecil Villanueva)
Not included in the list are papers coming out of International Research Groups (IRG) as well as those where involvement by UP faculty were incidental to projects. Many of these papers will soon be posted on the official site of the International Scientific Committee of EASTS as part of either Proceedings or Journal of EASTS. Some may be nominated for the Asian Transport Journal (ATS), which is also published by EASTS.
Transportation research in UP Diliman is the most developed among schools doing research on these topics in the country. Papers came from a variety of disciplines and academic units including Civil Engineering, Mechanical Engineering, Urban Planning, Geography and History. These mostly were and are undertaken through the National Center for Transportation Studies (NCTS), which is with UP Diliman.
Next up: De La Salle University
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Presentations at Usad EDSA consultation, Sept. 24, 2015
Following are presentation materials from the Usad EDSA consultation held at the GT Toyota Asian Center Auditorium of UP Diliman yesterday. I assume these are all for public consumption and for sharing among all stakeholders (all of us traveling in Metro Manila whether we use EDSA or not).
Situationer and actions: 09242015 SRDA EDC_rev
DOTC Express Bus Project: DOTC – Final Expanding Express Bus Services–EDSA Decongestion 24 Sept 2015
DPWH Road Engineering Projects: DPWH
MMDA presentation of situation and data: MMDA-Katupunan Mtg
I will refrain from making comments in this post as I need to understand the contents of the materials first. The important thins is to note that the government is doing what seems to be a best effort given the constraint of resources and time (The Presidential elections are coming up in May 2016.). Everyone of us must pitch in and do our part in making our commutes more pleasant than what they are now.
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Consultation on EDSA decongestion – September 24, 2015
There will be a public consultation tomorrow entitled “EDSA Decongestion Consultation” at the GT Toyota Auditorium at the Asian Center of the University of the Philippines Diliman from 1:30 – 3:30PM. The consultation will tackle transport and traffic in Metro Manila but particularly along EDSA. The consultation will be facilitated by the TWG headed by Sec. Almendras who is the cabinet secretary put in-charge of addressing (solving?) the traffic mess in Metro Manila. The TWG includes DPWH, DOTC, DTI, MMDA, LTO, LTFRB, and the PNP-HPG.
This would be a good venue for stakeholders to articulate their concerns as well as offer their ideas towards alleviating transport and traffic problems. Invitations are supposed to have been extended to academic institutions, transport groups and other interested parties. Hopefully, this event will be a productive and constructive one. Pointing fingers and playing the blame game will not get us anywhere.
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Mactan Cebu International Airport – International Departures Check-in
In our recent trip to Cebu, we had more than enough time before our flight back to Manila so we decided to explore the airport that is going to be transformed into a ‘resort airport’ as per press release of the group tasked to expand and upgrade Mactan Cebu International Airport. There have been significant changes to the airport including the improved taxi stand for those arriving at Mactan. (NAIA should note of this, which has its version in Davao’s Franciso Bangoy Airport as well.) Following are some photos of the international departures check-in section of the terminal.
Spacious area for international passengers checking-in for their flights
Passengers queued at the Silk Air counters
Passengers at the Cebu Pacific counters
Air Asia counters near the end of the terminal. Note the self check-in machine in the photo. There are machines like this for Air Asia and Cebu Pacific that can be used by passengers wanting to bypass the queues for those who have not checked in online. This is particularly useful for people traveling light and in a hurry.
A view of the Philippine Airlines counters, which are closer to the center of the airport terminal.
Counters for travel tax and OFW exit clearances
Airport terminal fee counters at Mactan
The final security check for domestic and international passengers at Mactan Airport is between the domestic and international check-in sections. The area is spacious unlike the previous set-up though I guess this can or will get crowded eventually with more flights being served by the airport.
A lot of people expect much from the expansion and upgrading of Mactan Cebu International Airport. For one, this is a major test case for the Public Private Partnership (PPP) scheme as applied to a major transport project. Succeed or fail, it will be a good reference for future projects particularly, of course, for airports. Definitely, the biggest measures for success would be the comfort and convenience of travelers using the terminal as well as the impact of a very good airport terminal to a city’s economy.
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“New phenomenon” in traffic?
I read in the news recently that the government official currently acting as traffic czar for Metro Manila. The news item may be found at the following link:
http://www.gmanetwork.com/news/story/536851/news/nation/almendras-cites-new-phenomenon-in-edsa
Apparently, the government official found what he claimed as a “new phenomenon” along EDSA. To quote from the article:
“Sa gabi, your honor, may bagong phenomenon na we’re still trying to understand: Bakit ang daming naghihintay ng bus pauwi?” Almendras told senators during the Senate Committee on Economic Affairs’ hearing on the traffic in Metro Manila.
The secretary added that while commuters are having a hard time getting a bus ride in the afternoon, EDSA is packed with passenger buses in the morning.
Almendras has been personally monitoring EDSA since the police’s Highway Patrol Group took over traffic management on the main thoroughfare.
He said somebody told him that passenger buses are no longer going out in the afternoon or in the evening because they have already hit their quota during daytime.
“This is not fact yet… Somebody told me that when the buses hit their minimum targets, the drivers decide, ‘Bakit pa ako magpapakahirap magbiyahe?'” he said.
“I have that question. Why do I see a lot of people on the streets waiting to go home in the afternoon than in the morning?” he added.
It boggles the mind on how our officials are making assessments of the transport and traffic situation around Metro Manila and particularly along EDSA. The statements taken directly shows how detached our officials are from the realities of commuting that most people face on a daily basis in the metropolis. Such statements reinforce calls for public officials to take public transportation themselves in order for them to experience first-hand and understand how most people feel during their daily travels between homes, workplaces and schools. But while people do not deserve such hardships of commuting, there is the lingering (philosophical) question of whether the same commuters deserve the leaders they elected who appointed these same officials who have been and continue to be inutile and insensitive to the plight of the commuting public. Hopefully, the coming 2016 elections will yield officials who will be more sensitive and responsive to the plight of commuters in this country.
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Caught (up) in traffic 