Electronic Road Pricing

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

ERP gantry at North Bridge Road

The Electronic Road Pricing (ERP) system is an electronic toll collection scheme adopted in Singapore to manage traffic by way of road pricing, and as a usage-based taxation mechanism to complement the purchase-based Certificate of Entitlement system.

The ERP was implemented by the Land Transport Authority in September 1998 to replace the preceding Singapore Area Licensing Scheme (ALS) that was first introduced in 1975 after successfully stress-testing the system with vehicles running at high speed. The system uses open road tolling; vehicles do not stop or slow down to pay tolls.[1][2]

Singapore was the first city in the world to implement an electronic road toll collection system for purposes of congestion pricing.[3] Its use has inspired other cities around the world in adopting a similar system, particularly London's Congestion Charge Zone (CCZ) and Stockholm's congestion tax.[4]

The system[edit]

An IU installed in a Comfort Taxi-managed Hyundai Sonata CRDI

The scheme consists of ERP gantries located at all roads linking into Singapore's Central Area. They are also located along the expressways and arterial roads with heavy traffic to discourage usage during peak hours. The gantry system is actually a system of sensors on 2 gantries, one in front of the other. Cameras are also attached to the gantries to capture the rear license plate numbers of vehicles. As of 2018, there are 93 ERP gantries in Singapore. New gantries are implemented where congestion is severe, like expressways and other roads.

A device known as an In-vehicle Unit (IU) is affixed on the lower right corner of the front windscreen within sight of the driver, in which a stored-value card, the CashCard, is inserted for payment of the road usage charges.[2] The second generation IU accepts Contactless NETS FlashPay and EZ-Link. The cost of an IU is S$150. It is mandatory for all Singapore-registered vehicles to be fitted with an IU if they wish to use the priced roads.

Mitsubishi Heavy Industries Ltd sold the IU technology to Singapore, and the project was spearheaded by a Consortium comprising Philips Singapore Pte Ltd., Mitsubishi Heavy Industries Ltd., Miyoshi Electronic Corporation and CEI Systems and Engineering (now known as CSE Global Ltd.) in 1995 through an open tender.

When a vehicle equipped with an IU passes under an ERP gantry, a road usage charge is deducted from the CashCard in the IU. Sensors installed on the gantries communicate with the IU via a dedicated short-range communication system, and the deducted amount is displayed to the driver on an LCD screen of the IU.

The charge for passing through a gantry depends on the location and time, the peak hour being the most expensive. Examples include a trip from Woodlands to Raffles Place via Yishun – CTE – CBD will cost about S$15 during peak as the driver will pass about 5 gantries, whereas during lunchtime, it will cost about S$2. Foreign visitors driving foreign-registered private vehicles on priced roads, during the ERP operating hours, could choose to either rent an IU or pay a daily flat fee of S$5 regardless how many ERP gantries entered, the payment is done and information is stored by Autopass Card until the vehicle leaves Singapore. Foreign-registered commercial vehicles, however, are required to install an IU.

If a vehicle owner does not have sufficient value in their CashCard (or EZ-Link) when passing through an ERP, the owner receives a fine by post within two weeks. The violator must pay the ERP charges plus a $10 administration fee within two weeks of the notice. Online payment is allowed; listing just the Vehicle Registration Number is required. Otherwise, a penalty of S$70 is issued by registered post to the vehicle owner, which rises to S$1000, or one month in jail, if not settled within 30 days.

Improvements and adaptations[edit]

Night works during the installation of a new ERP gantry at Hill View

According to a paper presented in the World Roads Conference 2006, the Land Transport Authority has been testing a system based on the Global Positioning System that may eventually replace the current Electronic Road Pricing system. The proposed system overcomes the inflexibility of having physical gantries, which "are not so flexible when it comes to re-locating them".

A lightweight version of this same technology is implemented for use on parking, known as the Electronic Parking System (EPS). It has since been adopted in favour by several carpark operators, superseding the use of autopay tickets or parking coupons. These systems have also typically switched to charging by the minute.


A study on the long-term effects of congestion pricing in Singapore found that "traffic congestion had not been eliminated—it had merely been shifted in time and location" and that the average travel time has increased.[5] The LTA reported that road traffic decreased by nearly 25,000 vehicles during peak hours, with average road speeds increasing by about 20%.[citation needed] Within the restricted zone itself, traffic has gone down by about 13% during ERP operational hours, with vehicle numbers dropping from 270,000 to 235,000. It has been observed that car-pooling and public transport has increased, while the hours of peak vehicular traffic has also gradually eased and spread into off-peak hours, suggesting a more productive use of road space. In addition, it has been noted that average road speeds for expressways and major roads remained the same, despite rising traffic volumes over the years.[citation needed]

In some cases, the implementation of an ERP gantry along a road may move the traffic to outer roads or shift to the public transport. One instance of this is that the ERP gantries have been said to have caused traffic to increase substantially in the arterial roads. The rising traffic has prompted the LTA to encourage more Singaporeans to switch to public transport, build more MRT lines, introduce new bus services and building of new roads to cope with the population growth. The overloading on the East Coast Parkway was relieved with the opening of Marina Coastal Expressway on 29 December 2013.

Latest developments[edit]

In an effort to improve the pricing mechanism and to introduce real-time variable pricing,[6] Singapore's Land Transport Authority, together with IBM, ran a pilot from December 2006 to April 2007, with a traffic estimation and prediction tool (TrEPS), which uses historical traffic data and real-time feeds with flow conditions from several sources, to predict the levels of congestion up to an hour in advance. By accurate estimating prevailing and emerging traffic conditions, this technology is expected to allow variable pricing, together with improved overall traffic management, including the provision of information in advance to alert drivers about conditions ahead, and the prices being charged at that moment.[7]

This new system integrates with the various LTA's traffic management existing systems, such as the Green Link Determining System (GLIDE), TrafficScan, Expressway Monitoring Advisory System (EMAS), Junction Electronic Eyes (J-Eyes),[8] and the Electronic Road Pricing system. The pilot results were successful, showing overall prediction results above 85 percent of accuracy. Furthermore, when more data was available, during peak hours, average accuracy raised near or above 90 percent from 10 minutes up to 60 minutes predictions in the future.[9]

The Land Transport Authority will replace the normal ERP gantry with the islandwide ERP system that will show the pricing of the congested road from 2019 onwards.[10] Subsequently, a tender was called and in 2016, NCS and MHI Engine System was awarded the contract to install the system at S$556 million, which is less than ST Electronics's bid of S$1.2 billion. The system also shows real-time traffic information, couponless parking and automatic payment. At that time, the Land Transport Authority said the system will start from 2020 with distance charging after the transitional period.[11] Electronic Road Pricing was suspended during the COVID-19 pandemic heightened lockdowns; with ERP resumed on several gantries. As a result, satellite ERP will start later after 2026. There will be no need for big gantries when the system starts, with current IU systems replaced by onboard units (OBUs) with one-piece units for motorcycles and three-piece units for cars.[12][13][14]

Adoptions by other metropolitan areas[edit]

In Ontario, Canada, an electronic road pricing system is used on Highway 407 to collect tolls electronically and billed to the owner of the car by taking a picture of its license plate.[15]

The ERP system attracted the attention of transport planners and managers in other metropolitan areas, particularly those in Europe and the United States. For example, the London Congestion Charge was introduced on 17 February 2003, after London officials visited Singapore to study the ERP system, and used it as a reference for the London system. London's charge area was expanded in 2007.[4]

The Stockholm congestion tax is also a congestion pricing system implemented as a tax which is levied on most vehicles entering and exiting central Stockholm, Sweden.[16] The congestion tax was implemented on a permanent basis on 1 August 2007,[17][18] after a seven-month trial period was held between 3 January 2006 and 31 July 2006.[19]

In 2007, Dubai, at the United Arab Emirates, implemented a corridor congestion pricing scheme called Salik which works on similar principles. In January 2008, Milan introduced a traffic charge scheme as a one-year trial, called Ecopass, and exempts high emission standard vehicles and some alternate fuel vehicles.[20][21][22] This tax was substituted in 2012 by the Area C system, which places a charge on nearly all vehicles entering the city centre during weekdays.

A similar system is expected to be operational on selected roads in Jakarta, the capital of Indonesia by early 2019.[23][24][25]

List of gantries[edit]

ERP Gantry Road
101 North Bridge Road (Bugis Junction)
102 Bencoolen Street (OG Albert)
103 Victoria Street (Westbound) after Rochor Road
104 Serangoon Road after Bukit Timah Road
105 Orchard Road (Dhoby Ghaut Station)
106 Cairnhill Road
107 Oxley Road
108 Penang Road (Dhoby Ghaut Station)
109 Republic Avenue
110 Temasek Boulevard (Suntec City)
111 Temasek Boulevard
112 Esplanade Drive
113 Connaught Drive (Esplanade Park)
114 Stamford Road after St Andrew's Road
115 Fullerton Road (Fullerton Square)
116 Orchard Road (Orchard Station)
117 Buyong Road
118 Eu Tong Sen Street
119 Anson Road
120 Maxwell Road
121 Church Street (after Market Street)
122 Central Boulevard (after Marina Bay Station)
123 Eu Tong Sen Street (after Clarke Quay Station)
124 Bayfront Avenue (MBS Convention & Casino)
125 Sheares Avenue (Marina Bay Sands)
126 Jalan Bukit Merah (Eastbound) after Hoy Fatt Road
127 Kallang Road (Westbound) after Lavender Street
128 Crawford Street before Crawford Bridge
129 Telok Blangah Road (Labrador Park MRT Station)
130 MCE (aft Maxwell Road)
131 ECP (aft Fort Road)
132 Haig Road (aft Mountbatten Road)
133 Tampines Avenue 7 (Tampines Regional Library)
134 Commonwealth Avenue West (Eastbound) after Clementi Road
135 Clementi Road (Northbound) after Commonwealth Avenue West
136 Commonwealth Avenue West (Westbound) after Dover Avenue
137 AYE after Clementi Road (Eastbound)
138 AYE after Buona Vista (Eastbound)
139 Portsdown Avenue
140 AYE before Alexandra Road (Eastbound)
141 PIE after Adam Road
142 PIE to Lornie Highway exit
143 BKE (Southbound) before Rifle Range Road
144 Tampines Avenue 5 (Southbound) after Tampines Central 8
145 Tampines Avenue 4 (Eastbound) after Tampines Avenue 5
146 Tampines Street 12 (Southbound) after Tampines Avenue 4
147 Tampines Avenue 2 (Westbound) after Tampines Street 22
148 Tampines Avenue 2 (Eastbound) after Tampines Avenue 5
149 Tampines Avenue 5 (Northbound) after Tampines Avenue 4
152 Commonwealth Avenue West after Clementi Fire Station
153 Commonwealth Avenue West after Clementi Avenue 6
154 Commonwealth Avenue West after Clementi Avenue 3
155 Jurong Gateway Road (Jurong East Bus Interchange)
161 Tiong Bahru Road after Redhill MRT Station
162 Tanglin Road before Tanglin View
163 Alexandra Road
201 Woodlands Square (Woodlands Civic Centre)
202 Woodlands Avenue 3 (Woodlands Square)
203 Woodlands Avenue 7 (Woodlands Square)
204 North Woodlands Drive
205 Choa Chu Kang Avenue 4
206 Choa Chu Kang Loop
207 Ang Mo Kio Avenue 6 (Southbound)
208 Ang Mo Kio Avenue 3 (Blk 700B)
209 Ang Mo Kio Avenue 6 (Northbound)
210 Lorong 6 Toa Payoh
211 CTE (Northbound) after Jalan Bahagia
212 Serangoon Central (NEX)
213 Upper Paya Lebar Road (Southbound)
214 Bartley Road (Eastbound)
215 Upper Paya Lebar Road (Northbound)
216 Paya Lebar Road (Northbound)
217 CTE (Southbound) after Braddell Road
218 CTE (PIE Entrance)
219 CTE (Balestier Road Exit)
220 Thomson Road (Northbound before Novena)
221 TPE (Eastbound) after KPE
222 TPE (Westbound) after KPE
223 Telok Blangah Road (VivoCity)
224 Gateway Avenue (Resorts World Sentosa)
225 PIE (Westbound) after Jalan Eunos
226 PIE (Westbound) after Bedok North Road
227 Tampines Avenue 10 (Southbound) after TPE
228 Bedok North Avenue 3 (Northbound) before Bedok North Road
229 New Upper Changi Road (Westbound) after Bedok North Avenue 3
231 New Upper Changi Road (Westbound) after Bedok MRT Station
232 Siglap Road
233 Sims Avenue East
234 Bedok North Avenue 1
235 Chai Chee Street
236 Simei Avenue (Southbound)
237 Boundary Road (Westbound) after Upper Paya Lebar Road
242 Haig Road (Southbound, Geylang Serai)
301 Kallang Bahru
302 Tampines Avenue 4 (Northbound) after Bedok Reservoir Road
303 Bedok North Road (Northbound) after PIE
304 Kaki Bukit Avenue 1
316 Ang Mo Kio Avenue 5 (Eastbound) after Ang Mo Kio Avenue 8
317 Ang Mo Kio Avenue 5 (Westbound) after Yio Chu Kang Road
318 Ang Mo Kio Avenue 8 (Southbound) after Ang Mo Kio Avenue 5
319 Ang Mo Kio Avenue 3 (Eastbound) after Ang Mo Kio Avenue 6
320 Lentor Avenue (Northbound)
321 Lentor Avenue (Southbound)
323 Yishun Avenue 2 (Southbound)
324 Yishun Avenue 2 (Northbound)
353 Tampines Avenue 1 (Eastbound) after Tampines Avenue 10
354 Tampines Avenue 1 (Westbound) after Bedok Reservoir Road
413 Upper Serangoon Road (Southbound) after Serangoon Avenue 2
443 Bukit Panjang Road entrance to BKE
444 Dairy Farm Road entrance to BKE
445 PIE (Eastbound) after Bukit Timah
446 Upper Bukit Timah Road (Southbound) after Petir Road

In total, there are 93 (increased to 104) ERP gantries in Singapore.

See also[edit]


  1. ^ Santos Georgina (2005). "Urban Congestion Charging: A Comparison between London and Singapore". Transport Reviews. 25 (5): 511–534. doi:10.1080/01441640500064439. S2CID 153685223.
  2. ^ a b Electronic Road Pricing. Land Transport Authority (Singapore)
  3. ^ Cervero, Robert (1998). The Transit Metropolis. Island Press, Washington, D.C. p. 169. ISBN 1-55963-591-6. Chapter 6/The Master Planned Transit Metropolis: Singapore.
  4. ^ a b Simon Jeffery & Sarah Phillips (7 August 2006). "Q&A: The congestion charge". The Guardian. Guardian News and Media. Retrieved 26 May 2007.
  5. ^ Sock-Yong PHANG (March 2004), "Road Congestion Pricing in Singapore: 1975-2003", Transportation Journal, 43 (2): 16–25, ISSN 0041-1612
  6. ^ Ken Belson (16 March 2008). "Importing a Decongestant for Midtown Streets". New York Times. Retrieved 6 April 2008.
  7. ^ "Predicting Where The Traffic Will Flow". PLANETIZEN. Retrieved 6 April 2008.
  8. ^ eMonitoring. "Intelligent Transport Systems". Transport Land Authority. Retrieved 6 April 2008.
  9. ^ "IBM and Singapore's Land Transport Authority Pilot Innovative Traffic Prediction Tool". IBM Press release. 1 August 2007. Retrieved 6 April 2008.
  10. ^ Channel NewsAsia (10 June 2010). "Satellite navigation ERP and electric cars possible on future road system". CNA. Retrieved 2 January 2012.
  11. ^ Tan, Christopher (25 February 2016). "LTA to roll out next-generation ERP from 2020, NCS-MHI to build system for $556m". The Straits Times. Retrieved 1 July 2021.
  12. ^ "Installation of On-Board Units for Next-Generation ERP System to Commence in Second Half of 2021". LTA. 8 September 2020. Retrieved 1 July 2021.
  13. ^ Tan, Christopher (8 September 2020). "New ERP system to start in 2023 but no distance-based charging yet; replacement of IU from second half of 2021". The Straits Times. Retrieved 1 July 2021.
  14. ^ "New ERP units to be installed from second half of 2021; no change yet to congestion pricing framework". CNA. 8 September 2020. Retrieved 1 July 2021.
  15. ^ 407 Express Toll Route. Retrieved on 1 July 2008.
  16. ^ "Congestion tax in Stockholm from 1 August". Swedish Road Administration. Archived from the original on 2 March 2007. Retrieved 2 August 2007.
  17. ^ "Trängselskatt i Stockholm". Swedish Road Administration. Archived from the original on 9 July 2007. Retrieved 1 August 2007.
  18. ^ "Odramatisk start för biltullarna". Dagens Nyheter. 1 August 2007. Archived from the original on 19 August 2007. Retrieved 1 August 2007.
  19. ^ "Stockholmsförsöket". Stockholmsförsöket. Archived from the original on 15 July 2007. Retrieved 18 July 2007.
  20. ^ Toll Discounts for Going Green, The New York Times, 27 January 2008
  21. ^ Milan introduces traffic charge. BBC News (2 January 2008). Retrieved on 12 June 2012.
  22. ^ Milan Introduces Congestion Charge To Cut Pollution. Nysun.com (3 January 2008). Retrieved on 12 June 2012.
  23. ^ "Jakarta aims to introduce electronic road pricing in 2019". The Jakarta Post. Retrieved 25 March 2018.
  24. ^ Post, The Jakarta. "Jakarta Police request evaluation of odd-even policy". The Jakarta Post. Retrieved 13 November 2018.
  25. ^ "ERP will be implemented in Jakarta next year: Sandiaga". The Jakarta Post. Retrieved 13 November 2018.

External links[edit]