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     FrontPage Edition: Thu 31 January 2008

 Changes to ERP system

Source: www.lta.gov.sg

Measures To Manage Road Usage
 
As announced by Mr Raymond Lim, the Minister for Transport, the Land Transport Authority (LTA) will be making changes to the Electronic Road Pricing (ERP) system to enhance its effectiveness in managing traffic congestion on the roads.
With the changes, a total of 16 new ERP gantries will be activated this year, and this includes the 5 gantries which were announced in August 2007 last year but have not been activated.
The ERP changes will be phased in gradually, starting with the Central Business District (CBD) and Orchard Cordons in July 2008. This is to give time for motorists to adjust their travel plans and allow for the impact of the changes in the CBD and Orchard Cordon to work its way through the rest of the road network.
The enhancements to the ERP system, the implementation of new ERP gantries and how the new ERP criteria will take effect are outlined below.
Enhancements to the ERP System

The ERP system has essentially remained unchanged since its introduction in 1998. As traffic volumes today are far different from a decade ago, enhancements are necessary to ensure the ERP system’s effectiveness. As part of the Land Transport Review, the LTA has studied and reviewed the matter carefully, and will be implementing the following changes to enhance the ERP system from July 2008:

a. Use the 85th Percentile Speed Measurement Method

The current threshold speeds (45 km/h on expressways and 20 km/h on arterial roads) were set 10 years ago. Today, the threshold speeds are close to the point where traffic flow can deteriorate rapidly into the unstable zone where ‘stop-start’ conditions become common. In order to create a buffer, LTA will use a more representative method of measuring actual traffic conditions for ERP rate reviews, with speeds determined using the 85th percentile speed measurement method, instead of using average speeds as is done currently. The 85th percentile speed measurement method is also an international traffic engineering practice for assessing traffic conditions. With the revised speed measurement method, motorists will be assured of smooth travel on ERP-priced roads at least 85% of the time;
b. Increase the Initial ERP Charge and Rate Increment
Motorists today are less sensitive to the rate structure which has remained unchanged since 1998. For ERP charges to remain effective in influencing motorists’ behaviour, Lour, LTur, LTur, LTur, LTA will raise the incremental ERP charge from $0.50 to $1. In addition, the ERP base charge, which is the starting charge for a new ERP gantry point, will be increased from the current $1 to $2. These changes will improve the effectiveness of the ERP system, so that each time ERP rates are adjusted, motorists who still choose to drive on these roads would see a visible improvement in traffic flows.
c. Manage Congestion in the City Area
To address the congestion in the city area, LTA will introduce the Singapore River Line, comprising 5 new ERP gantries that run roughly along the Singapore River to discourage through traffic from using the city for outbound trips, and Saturday traffic.
New ERP Gantries
LTA has been monitoring traffic conditions closely on the roads, and has assessed that 16 new ERP gantries are necessary to help manage congestion at the identified locations. The LTA will phase in the implementation of the 16 gantries as shown below.
More.....

Source: www.lta.gov.sg News Release 30 Jan 2008

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