Transportation in the Philippines

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Philippine National Rail Metro Commuter line DMU with 2020 livery, Dela Rosa station, Metro Manila.

Transportation in the Philippines covers the transportation methods within this archipelagic nation of over 7,500 islands. From a previously underdeveloped state of transportation, the government of the Philippines has been improving transportation through various direct infrastructure projects, and these include an increase in air, sea, road, and rail transportation and transport hubs.[1]

Jeepneys are a popular and iconic public utility vehicle. They have become a symbol of the Philippine culture.[2] Another popular mode of public transportation in the country is the motorized tricycles, especially common in smaller urban and rural areas.[3] The Philippines has four railway lines: Manila Light Rail Transit System Line 1, Manila Light Rail Transit System Line 2, Manila Metro Rail Transit System Line 3, and the PNR Metro Commuter Line operated by the Philippine National Railways. There are also steam engines found in Visayas which operate sugar mills such as Central Azucarera. Taxis and buses are also important modes of public transport in urban areas.

The Philippines has 12 international airports and has more than 20 major and minor domestic airports serving the country.[4] The Ninoy Aquino International Airport is the main international gateway to the Philippines.

Land transportation[]

Roads[]

As of October 2018, the Philippines has 217,317 kilometers (135,035 mi) of roads.[5] The road network consists of:

  • National roads – 33,018.25 kilometers (20,516.59 mi) (2019)[6]
  • Provincial roads – 31,620 kilometers (19,650 mi) (2018)[5]
  • City and municipal roads – 31,063 kilometers (19,302 mi) (2018)[5]
  • Barangay roads – 121,702 kilometers (75,622 mi) (2018)[5]

In 1940, there were 22,970 kilometers (14,270 mi) of road in the entire country, half of which was in central and southern Luzon.[7] The roads served 50,000 vehicles.[7]

Road classification is based primarily on administrative responsibilities (with the exception of barangays), i.e., which level of government built and funded the roads. Most of the barangay roads are unpaved village-access roads built in the past by the Department of Public Works and Highways (DPWH), but responsibility for maintaining these roads have been devolved to the Local Government Units (LGUs). Farm-to-market roads fall under this category, and a few are financed by the Department of Agrarian Reform and the Department of Agriculture.[8]

Highways[]

Main article: Philippine highway network
EDSA
Sayre Highway in Mindanao

Highways in the Philippines include national roads that can be classified into three types: the national primary, national secondary and national tertiary roads.

The Pan-Philippine Highway is a 3,517 km (2,185 mi) network of roads, bridges, and ferry services that connect the islands of Luzon, Samar, Leyte, and Mindanao, serving as the Philippines' principal transport backbone. The northern terminus of the highway is in Laoag, and the southern terminus is at Zamboanga City.

Epifanio de los Santos Avenue (EDSA) is one of the most known highways in the Philippines. The avenue passes through 6 of the 17 settlements in Metro Manila, namely, the cities of Caloocan, Quezon City, Mandaluyong, San Juan, Makati and Pasay. EDSA is the longest highway in the metropolis and handles an average of 2.34 million vehicles.[9] Commonwealth Avenue is also an important highway in the metropolis, it serves the Quezon City area and has a length of 12.4 km (7.7 mi). Other important thoroughfares in Metro Manila that are part of the Philippine highway network include España Boulevard, Quezon Avenue, Taft Avenue, and the Alabang–Zapote Road.

Outside Metro Manila, the MacArthur Highway links Metro Manila to the provinces in central and northern Luzon. It is a component of both N1 (from Caloocan to Guiguinto) and N2 (from Guiguinto northwards to Laoag) of the Philippine highway network and Radial Road 9 (R-9) of Metro Manila's arterial road network. Both Kennon Road and Aspiras–Palispis Highway are major roads leading to and from Baguio. Aguinaldo Highway, Jose P. Laurel Highway, Manila South Road, and Calamba–Pagsanjan Road (part of Manila East Road) are the major roads in the Calabarzon region. Andaya Highway (N68) links the province of Quezon to Bicol Region. Located in Cebu City is the Colon Street, considered the oldest thoroughfare in the country. Among the major highways in Mindanao are Sayre Highway, Butuan–Cagayan de Oro–Iligan Road, Surigao–Davao Coastal Road, Davao–Cotabato Road, and Maria Clara L. Lobregat Highway.

The Strong Republic Nautical Highway links many of the islands' road networks through a series of roll-on/roll-off ferries, some rather small covering short distances and some larger vessels that might travel several hours or more.

Expressways[]

Main article: Philippine expressway network
Tarlac–Pangasinan–La Union Expressway
Metro Manila Skyway

The Philippines has numerous expressways and most of them are located in the main island of the country, Luzon. The first expressway systems in the country are the North Luzon Expressway formerly known as North Diversion Road and the South Luzon Expressway, formerly known as South Super Highway. Both were built in the 1970s, during the presidency of Ferdinand Marcos.

The North Luzon Expressway (NLEX) is a 4 to 8-lane limited-access toll expressway that connects Metro Manila to the provinces of the Central Luzon region. The expressway begins in Quezon City at a cloverleaf interchange with EDSA. It then passes through various cities and municipalities in the provinces of Bulacan and Pampanga. The expressway ends at Mabalacat and merges with the MacArthur Highway, which continues northward into the rest of Central and Northern Luzon.

The South Luzon Expressway (SLEX) is another important expressway in the country, it serves the southern part of Luzon. The expressway is a network of two expressways that connects Metro Manila to the provinces of Calabarzon in the southern part of Luzon. It starts at the Paco District of Manila then passes through Manila, Makati, Pasay, Parañaque, Taguig and Muntinlupa in Metro Manila; San Pedro, Biñan in Laguna; Carmona in Cavite, then transverses again to Biñan, Santa Rosa, Cabuyao and Calamba in the province of Laguna and ends in Santo Tomas, Batangas.

The Subic–Clark–Tarlac Expressway is another expressway that serves the region of Central Luzon, the expressway is linked to the North Luzon Expressway through the Mabalacat Interchange. Its southern terminus is at the Subic Bay Freeport Zone in Zambales, it passes through the Clark Freeport Zone and its northern terminus is at Brgy. Amucao in Tarlac City. Construction on the expressway began in April 2005, and opened to the public three years later.[10]

The Cavite Laguna Expressway is an expressway that connects Cavite, Laguna, NCR. As of July 2021 it is partially opened for the Tagaytay to Silang route. It will also be connected in Cavitex.

The Philippine government and other private sectors are building more plans and proposals to build new expressways through public–private partnership.[11]

Railways[]

Main article: Rail transportation in the Philippines
The Line 2 of the Manila Light Rail Transit System

Rail transportation in the Philippines includes services provided by three rapid transit lines and one commuter rail line: the Manila Light Rail Transit System (Lines 1 and 2), Manila Metro Rail Transit System (Line 3) and the PNR Metro South Commuter Line. The government has plans to expand the country's railway footprint from 77 kilometers as of 2017 to more than 320 kilometers by 2022.[12]

The Manila Light Rail Transit System or the LRTA system, is a rapid transit system serving the Metro Manila area, it is the first metro system in Southeast Asia.[13] The system served a total 928,000 passengers each day in 2012.[14][15] Its 31 stations along over 31 kilometers (19 mi) of mostly elevated track form two lines: the original Line 1, and the more modern Line 2 which passes through the cities of Caloocan, Manila, Marikina, Pasay, San Juan and Quezon City. Apart from the LRTA system, the Manila Metro Rail Transit System system also serves Metro Manila. The system is located along the Epifanio de los Santos Avenue (EDSA), one of Metro Manila's main thoroughfares. It has 13 stations along its 16.95 km track form a single line which is the Line 3 which passes through the cities of Makati, Mandaluyong, Pasay and Quezon City. Some of the stations of the system have been retrofitted with escalators and elevators for easier access, and ridership has increased. By 2004, Line 3 had the highest ridership of the three lines, with 400,000 passengers daily.[16]

Philippine National Railways (PNR) operates a commuter line that serves a region from Metro Manila south toward Laguna. PNR, a state-owned railway system of the Philippines, alongside a tramway system in Manila, were established during the Spanish Colonial period.[17] The intercity rail used to provide services on Luzon, connecting northern and southern Luzon with Manila; on the other hand, the tramway served what is known today as Metro Manila. In 1988, the railway line to northern Luzon became disused and later the services to Bicol were halted although plans to revive the southern line are around as of 2015. Panay Railways is a company that ran rail lines on Panay until 1989 and Cebu until World War II.

Water transportation[]

A pump boat at sunset off of Guimaras.

Waterways[]

3,219 km; limited to shallow-draft (less than 1.5 m) vessels.

River ferries[]

The Pasig River Ferry Service is a river ferry service that serves Metro Manila, it is also the only water-based transportation that cruised the Pasig River. The entire ferry network had 17 stations operational and 2 lines. The first line was the Pasig River Line which stretched from Plaza Mexico in Intramuros, Manila to Nagpayong station in Pasig. The second line was the Marikina River Line which served the Guadalupe station in Makati up to Santa Elena station in Marikina.

Ferry services[]

See also: Philippine Nautical Highway System
MV Trisha Kerstin 2 in Zamboanga International Seaport

Because it is an island nation, ferry services are an important means of transportation. A range of ships are used, from large cargo ships to small pump boats. Some trips last for a day or two on large overnight ferries. There are numerous shipping companies in the Philippines. Notable companies include 2GO Travel (the successor to Superferry and Negros Navigation) and Trans-Asia Shipping Lines.[18] Other trips can last for less than 15 minutes on small, open-air pump boats such as those that cross the Iloilo Strait or between the Caticlan jetty port and Boracay island.

Ports and harbors[]

See also: List of ports in the Philippines and Philippine Ports Authority

The busiest port is the Port of Manila, especially the Manila International Cargo Terminal and the Eva Macapagal Port Terminal, both in the pier area of Manila. Other cities with bustling ports and piers include Bacolod, Batangas City, Cagayan de Oro, Cebu City, Davao City, Butuan, Iligan, Iloilo City, Jolo, Legazpi City, Lucena City, Puerto Princesa, San Fernando, Subic, Zamboanga City, Cotabato City, General Santos City, Allen, Ormoc, Ozamiz, Surigao and Tagbilaran. Most of these terminals comprise the Strong Republic Nautical Highway, a nautical system conceptualized under the term of President Gloria Macapagal Arroyo where land vehicles can use the roll-on/roll-off (ro-ro) ferries to cross between the different islands.

Air transportation[]

Main article: Air transportation in the Philippines

Airports[]

Main article: List of airports in the Philippines
Terminal 1 of the Ninoy Aquino International Airport

Manila, Iloilo, Cebu, Davao, Clark, Subic, Zamboanga, Laoag and Puerto Princesa are the international gateways to the country, with the Ninoy Aquino International Airport (NAIA) in Manila as the main and premier gateway of the country.[19]

The Ninoy Aquino International Airport serves as the premier gateway of the Philippines, it serves the Metro Manila area and its surrounding regions. It is located in the boundary of Parañaque and Pasay in the National Capital Region. In 2012, NAIA became the 34th busiest airport in the world, passenger volume increased to about eight percent to a total of 32.1 million passengers, making it one of the busiest airports in Asia.[20]

The Clark International Airport is also a major gateway to the country. It was originally planned to replace the Ninoy Aquino International Airport as the country's premier airport, amid the plan to shut down the Ninoy Aquino International Airport.[21] The airport mostly serves low-cost carriers that avail themselves of the lower landing fees than those charged at NAIA.

Other important airports in the Philippines are the Mactan–Cebu International Airport in Lapu-Lapu City, Cebu, Iloilo International Airport in Cabatuan, Iloilo, Francisco Bangoy International Airport in Davao City, Zamboanga International Airport in Zamboanga City, Puerto Princesa International Airport in Puerto Princesa, Palawan and the General Santos International Airport in General Santos City.

Airlines[]

Philippine Airlines, the flag carrier of the country.

Philippine Airlines (PAL) is the national flag carrier of the Philippines and is the first commercial airline in Asia.[22] Philippine Airlines remains as the country's biggest airline company, it has the largest number of international flights to the Philippines as well as domestic flights.[23] As of 2013, Philippine Airlines flies to 8 domestic and 58 international destinations in 33 countries and territories across Asia, North America, South America, Africa, Oceania and Europe.[24][25][26] The airlines operates hubs in Clark, Manila, Cebu, and Davao.

Cebu Pacific is the low fare leader in the country, and is the country's leading domestic airline, flying to 37 domestic destinations. Since the launching of its international operations in November 2001, flies to 27 destinations in 15 countries and territories across Asia and Oceania.[27] As of 2013, the airline operates hubs in Manila, Cebu and Davao.[28]

Other low-cost carriers in the country include Cebgo, PAL Express, and Philippines AirAsia. These airlines have routes to several tourist destinations in the country.

Automobile industry[]

Main article: Automotive industry of the Philippines

The Philippines' automobile industry started during the American Colonial Period from 1898 to 1946, with the introduction of American-made cars, which have been sold in the Philippines ever since. An import substitution policy was developed for the 1950s, which led to the prohibition of and then punishingly high tariffs on the import of fully built-up cars (CBUs) from 1951 until 1972.[29] During the 1973 oil crisis, Marcos advised Filipinos to buy smaller, more efficient vehicles with four-cylinder engines. In the early 1970s, the local Volkswagen assembler attempted to build a native national car, the "Volkswagen Sakbayan" (short for sasakyangkatutubongbayan), to avoid reliance on imported "completely-knocked-down" or "semi-knocked-down" parts, but this did not last long.[30] In 1972 the government instituted the Progressive Car Manufacturing Program (PCMP), a system with scheduled increases in local parts content requirement which also allowed program participants to import a certain proportion of CBU vehicles.[29] The original participants were General Motors, Ford, PAMCOR (a Chrysler/Mitsubishi joint venture), Delta Motors Corporation (Toyota), and Nissan Motor Philippines.

Limousines[]

Limousines are used by the President & Vice-President of the Philippines, as well as wedding services for wealthy families. Otherwise, they are seldom seen on Philippine roads due to considerations like cost and road traffic conditions but if used, they are utilized for Bridal events or limo services. Limousines include the Chrysler 300C, Lincoln Town Car, Mercedes-Benz E-Class and S-Class, as well as SUV-based limousines such as the Cadillac Escalade and Hummer H2.

Jeepneys[]

Main article: Jeepney
A typical jeepney in Legazpi, Albay

Jeepneys are the most popular means of public transportation in the Philippines.[2] They were originally made from US military jeeps left over from World War II[31] and are known for their flamboyant decoration and crowded seating. They have become a ubiquitous symbol of Filipino culture.

Original jeepneys were simply refurbished military jeeps by Willys & Ford, modern jeepneys are now produced by independently owned workshops and factories in the Philippines with surplus engines and parts coming from Japan. In the central island of Cebu, the bulk of jeepneys are built from second-hand Japanese trucks, originally intended for cargo. These are euphemistically known as "surplus" trucks.

There are two classes of jeepney builders in the Philippines.[2] The backyard builders produce 1–5 vehicles a month, source their die-stamped pieces from one of the larger manufacturers, and work with used engines and chassis from salvage yards (usually the Isuzu 4BA1, 4BC2, 4BE1 series diesel engines or the Mitsubishi Fuso 4D30 diesel engines). The second type is the large volume manufacturer. They have two subgroups: the PUJ, or "public utility jeep," and the large volume metal-stamping companies that supply parts as well as complete vehicles.

The jeepney builders in the past were mostly based in Cebu City and Las Piñas. The largest manufacturer of vintage-style army jeepneys is MD Juan. Other makers include Armak Motors (San Pablo, Laguna), Celestial Motors (San Pablo, Laguna), Hebron Motors, LGS Motors, Malagueña (Imus, Cavite), Mega (Lipa, Batangas), Morales Motors (San Mateo, Rizal), and Sarao Motors (Las Piñas). Another manufacturer, PBJ Motors, manufactured jeepneys in Pampanga using techniques derived from Sarao Motors. Armak sells remanufactured trucks and vehicles as an adjunct, alongside its jeepneys.

Non-motorized transport[]

Human-powered and animal-powered transport exist in the Philippines in the form of walking, cycling,[32] pedicabs (also known as traysikad or padyak), and horse- or cattle-drawn kalesas.[33] Non-motorized boats are also used on inland and coastal waters.[34] The United Nations and such organizations as Clean Air Asia[35] support the integration of non-motorized transport as part of a clean and "highly cost-effective transportation strategy" that "brings about large health, economic and social co-benefits, particularly for the urban poor."[36]

In Marikina, Metro Manila, the local government constructed a network of bikeways to help reduce air pollution, greenhouse gas emissions, fuel consumption, and traffic congestion in the city. The bikeways project was awarded by the World Health Organization in 2008 in the category of climate change and health.[35]

Issues[]

Traffic congestion along Epifanio de los Santos Avenue.

With the rapid growth in economic activities and urbanization, the public utility vehicles, along with private vehicles, exponentially increased in numbers, which resulted in poorer air quality and frequent traffic congestion in the cities.[37]

Traffic congestion[]

See also: Traffic congestion § Philippines

Traffic congestion is an issue, especially on Metro Manila. Increasing car sales and lack of mass transit and highways cause most traffic congestion, and is feared to make Metro Manila "uninhabitable" by 2020.[38] A survey made by Waze called Metro Manila the "worst traffic on Earth".[39]

Economic losses due to traffic congestion costs about ₱3 billion, as of 2012.[40] By 2030, over ₱6 billion will be lost in the Philippines' economy due to traffic congestion, according to JICA.[41]

Air pollution[]

There are around 270,000 franchised jeepney units on the road across the country, with some 75,000 units in Metro Manila alone.[42] With the country's fast development and economic growth, old-model jeepneys have become the main contributor to air pollution and traffic congestion in the cities. According to the Manila Aerosol Characterization Experiment (MACE 2015) study, jeepneys, which account for 20% of the total vehicle fleet, are responsible for 94% of the soot particle mass in Metro Manila.[43] In addition to air pollutants such as nitrogen oxides(NOx), sulfur oxides(SOx), carbon monoxide(CO) and other particulate matter (PM), jeepneys contributes to greenhouse gas emissions of about 12.49–17.48 Mtons of CO2 per year.[44]

See also[]

References[]

  1. ^ "Government keen on improving public transport system". Philstar. Retrieved January 30, 2013.
  2. ^ Jump up to: a b c Lema, Karen (November 20, 2007). "Manila's jeepney pioneer fears the end of the road". Reuters. Retrieved February 27, 2008.
  3. ^ William C. Pollard, Jr. (November 1, 2010). "email to Lonely Planet". Boracay Budget Travel website. p. 2. Archived from the original on June 30, 2012.
  4. ^ "Airports in the Philippines". World Aero Data. Archived from the original on May 27, 2016. Retrieved June 5, 2016.
  5. ^ Jump up to: a b c d "The Project for Improvement of Quality Management for Highway and Bridge Construction and Maintenance, Phase III" (PDF). JICA報告書PDF版(JICA Report PDF). Japan International Cooperation Agency. April 2019. p. 13. Retrieved June 18, 2021.
  6. ^ "2019 Road Data". Department of Public Works and Highways. February 26, 2020. Retrieved August 9, 2020.
  7. ^ Jump up to: a b Morton, Loius (1953). The War in the Pacific: Fall of the Philippines. Washington, DC: Government Printing Office. Retrieved May 19, 2014.
  8. ^ "Roadways in Philippines". Retrieved March 17, 2015.
  9. ^ "Average vehicle speed on Edsa is 36.24kph – INQUIRER.net, Philippine News for Filipinos". Retrieved March 17, 2015.
  10. ^ "Subic-Clark-Tarlac highway opens from Inquirer.net". Retrieved March 17, 2015.
  11. ^ "Building Of New Expressways Pushed". Yahoo! Philippines. Retrieved April 27, 2013.
  12. ^ Camus, Miguel R. (November 28, 2017). "PH railway footprint to quadruple by 2022". Philippine Daily Inquirer. Retrieved December 8, 2017.
  13. ^ "The Line 1 System – The Green Line". Light Rail Transit Authority. Archived from the original on July 14, 2014. Retrieved October 21, 2014.
  14. ^ "Key Performance Indicator – Line 1 – Green Line". Light Rail Transit Authority. Archived from the original on October 16, 2014. Retrieved June 9, 2014.
  15. ^ "Key Performance Indicator – Line 2 – Blue Line". Light Rail Transit Authority. Archived from the original on October 21, 2014. Retrieved June 10, 2014.
  16. ^ "Manila Metro Rail Transit-3 (MRT-3)". Urban Rail. Archived from the original on July 18, 2006. Retrieved July 7, 2006.
  17. ^ Satre, Gary L. (June 1998). "The Metro Manila LRT System—A Historical Perspective" (PDF) (16). Japan Railway & Transport Review. Archived from the original (PDF) on May 5, 2006. Retrieved November 18, 2015.
  18. ^ Austria, Myrna S. (2003). "Philippine Domestic Shipping Transport Industry: State of Competition and Market Structure" (PDF). Philippine Institute for Development Studies. p. 38. Retrieved June 6, 2008.
  19. ^ "Transportation in the Philippines". Philippines Government. Retrieved June 5, 2016.
  20. ^ "NAIA world's 34th busiest airport". philstar.com. Retrieved March 17, 2015.
  21. ^ "Arroyo wants DMIA become top airport amid plan to close NAIA". GMA News and Public Affairs. Philippines. January 29, 2008.
  22. ^ "History and Milestone". Philippine Airlines. Retrieved June 5, 2016.
  23. ^ [1], Philippine Airlines. Retrieved January 2013.
  24. ^ "Domestic Destinations". Philippine Airlines. Retrieved October 17, 2013.
  25. ^ "International Destinations". Philippines Airlines. Retrieved October 17, 2013.
  26. ^ "Philippine Airlines: Winter Timetable" (PDF). Philippineairlines.com. Archived from the original (PDF) on December 7, 2013. Retrieved November 5, 2013.
  27. ^ "Archived copy". Archived from the original on May 12, 2013. Retrieved April 27, 2013.CS1 maint: archived copy as title (link) About CEB
  28. ^ "Archived copy". Archived from the original on June 28, 2013. Retrieved April 27, 2013.CS1 maint: archived copy as title (link)
  29. ^ Jump up to: a b Ofreneo, Rene E. (February 2015), "Auto and Car Parts Production: Can the Philippines Catch Up with Asia?" (PDF), ERIA Discussion Paper Series, p. 9, ERIA-DP-2015-09
  30. ^ Ofreneo, p. 1
  31. ^ Otsuka, Keijiro; Kikuchi, Masao; Hayami, Yujiro (January 1986). "Community and Market in Contract Choice: The Jeepney in the Philippines". Economic Development and Cultural Change. 34 (2): 279–298. doi:10.1086/451528. JSTOR 1153851. S2CID 155062784.
  32. ^ "Memorandum Circular No. 2020-2185" (PDF). Land Transportation Office. May 12, 2020. Retrieved August 5, 2021.
  33. ^ Orejas, Tonette (September 5, 2012). "Pampanga city keeps calesas alive, relevant". Inquirer. Retrieved August 5, 2021.
  34. ^ "Rules and regulations on commercial fishing" (PDF). Bureau of Fisheries and Aquatic Resources. December 8, 1983. Retrieved August 5, 2021.
  35. ^ Jump up to: a b "Promoting Non-Motorized Transport in Asian Cities: Policymakers' Toolbox" (PDF). UN Habitat. December 2013. Retrieved August 5, 2021.
  36. ^ "Promotion of non-motorised transport". Climate Technology Centre and Network. Retrieved August 5, 2021.
  37. ^ Guno, Charmaine Samala; Collera, Angelie Azcuna; Agaton, Casper Boongaling (2021). "Barriers and Drivers of Transition to Sustainable Public Transport in the Philippines". World Electric Vehicle Journal. 12 (1): 46. doi:10.3390/wevj12010046.
  38. ^ Middleton, Rachel (January 15, 2016). "Philippines: Manila to be uninhabitable in 4 years if traffic chaos not resolved". International Business Times. Retrieved April 26, 2016.
  39. ^ Tan, Lara (October 2, 2015). "Metro Manila has 'worst traffic on Earth', longest commute – Waze". CNN Philippines. Archived from the original on January 23, 2016. Retrieved April 26, 2016.
  40. ^ "Metro Manila traffic costing Philippines P3 billion a day". Associated Press. September 16, 2015. Retrieved April 26, 2016 – via The Philippine Star.
  41. ^ Casayuran, Mario (August 25, 2015). "Economic losses from Metro Manila traffic to reach P6B in 2030". Manila Bulletin. Retrieved April 26, 2016.
  42. ^ Agaton, Casper Boongaling; Guno, Charmaine Samala; Villanueva, Resy Ordona; Villanueva, Riza Ordona (September 2019). "Diesel or Electric Jeepney? A Case Study of Transport Investment in the Philippines Using the Real Options Approach". World Electric Vehicle Journal. 10 (3): 51. doi:10.3390/wevj10030051.
  43. ^ Kecorius, Simonas; Madueño, Leizel; Vallar, Edgar; Alas, Honey; Betito, Grace; Birmili, Wolfram; Cambaliza, Maria Obiminda; Catipay, Grethyl; Gonzaga-Cayetano, Mylene; Galvez, Maria Cecilia; Lorenzo, Genie; Müller, Thomas; Simpas, James B.; Tamayo, Everlyn Gayle; Wiedensohler, Alfred (December 1, 2017). "Aerosol particle mixing state, refractory particle number size distributions and emission factors in a polluted urban environment: Case study of Metro Manila, Philippines". Atmospheric Environment. 170: 169–183. Bibcode:2017AtmEn.170..169K. doi:10.1016/j.atmosenv.2017.09.037. ISSN 1352-2310.
  44. ^ Agaton, Casper Boongaling; Collera, Angelie Azcuna; Guno, Charmaine Samala (2020). "Socio-Economic and Environmental Analyses of Sustainable Public Transport in the Philippines". Sustainability. 12 (11): 4720. doi:10.3390/su12114720.

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