Electronic Road Pricing (ERP) is a system used to manage road congestion in Singapore.
At a glance
You pay a fee when driving through an ERP gantry during operational hours.
ERP charges are reviewed regularly to keep traffic moving at an optimal speed.
There are different ERP operating hours on the eve of major public holidays.
Paying your ERP charges
To avoid ERP violations, check that your IU and your stored-value cards are working before you drive.
When you sign up for a backend payment service, the service provider will notify you once the service is activated.
If you drive through an ERP gantry without paying, you will receive a notice of ERP violation. You will then have to pay the ERP charge plus an administrative fee.
See how foreign-registered vehicles pay ERP.
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ERP is used to manage road congestion in Singapore. Drivers will incur ERP charges when passing through ERP gantries during its operational hours. To avoid incurring ERP charges, motorists can consider using alternative routes, travelling outside ERP operational hours, or taking public transport instead of driving.
ERP rates are reviewed every quarter and adjusted during the June and December school holidays, based on the traffic conditions at the time.
ERP rates are generally set in half-hour periods.
The time period (0730-0800) means the corresponding ERP rate applies from and including 7.30am and applies until but excluding 8.00am.
The same definition applies to other time periods.
ERP rates are adjusted to keep traffic moving at an optimal speed range of 20-30 kmh on arterial roads and 45-65 kmh on expressways.
The ERP charge you pay depends on:
- The type of your vehicle. Bigger vehicle types pay more.
- The time you enter the ERP gantry. During peak hours, charges can change every half hour to help spread traffic flow over a longer period.
There are no ERP charges for Sundays and all public holidays. ERP stops operating at 1 pm on the eve of New Year’s Day, Chinese New Year, Hari Raya Puasa, Deepavali and Christmas Day.
All Singapore-registered vehicles must install an IU to drive through operating ERP gantries. If you do not have an IU, there is a penalty of $70.00 for each operating ERP gantry you drive through.
The IU in each vehicle communicates with the ERP gantry to deduct the ERP charge. You can install your IU at any LTA-Authorised Inspection Centre (AIC) at a cost of $155.80. For IU-related issues, you can visit an IU inspection centre.
Each IU comes with a label stating the IU number. You can also check your IU number online.