Hi Kh Ng, thank you for your question. You can distinguish between the old and new models of In-Vehicle Units (IUs) based on their features. The new IU-interface displays both your cash card balance and the amount deducted, while the old one only shows your cash card balance.

Current IUs will be replaced for free with the upcoming OBUs, which will be able to switch to distance-based charging in the future.

For more detailed information about the upcoming changes with ERP 2.0, you can check out our article here https://www.motorist.sg/article/2544/the-motorist-guide-to-erp-2-0-in-singapore