• In 1991, the Singapore Government introduced the Weekend Car (WEC) scheme, which was later replaced by the Off-Peak Car (OPC) scheme in 1994. Both schemes allowed infrequent vehicle users to save on car registration fees and road tax, while also addressing traffic congestion issues. However, these vehicle owners were only allowed to use their cars during specific time periods.
• In order to differentiate vehicles under this scheme from regular vehicles, OPCs have red plates with white lettering.
• The OPC Scheme was revised on 25 January 2010. Under the Revised Off-Peak Car (ROPC) scheme, ROPCs are no longer restricted from use on Saturdays and the eves of five public holidays (New Year, Chinese New Year, Hari Raya Puasa, Deepavali and Christmas). Like OPCs, ROPCs receive a discount on road tax.

This year, Certificate of Entitlement (COE) prices for small and medium-sized vehicles dropped to an average of S$30,000, thus attracting more people to register their new vehicles as offpeak cars. The number of newly registered off-peak cars for the first 11 months this year has surpassed the total number registered last year by nearly 30%. (Lianhe Zaobao, 21/12/2018)