Check the front. Also it's not limited to OKU drivers. As long your car is ferrying OKU Passengers it's allowed to use that space.

https://www.jpj.gov.my/en/web/main-site/ken...or-oku-stickers

Conditions of Application :

Applications may be submitted by the registered owner, beneficiary or representative of the organization/association.
Vehicle registered under the name of the disabled persons possessing OKU Card with the reference number that starts with ' PH ' (disabled persons with physical disability) or ' CA ' (old OKU Card reference number issued by  the Social Welfare Department in Sarawak) or;
The vehicle has been registered under code uses IT (vehicles for disabled people) or;
A vehicle owned by organization/association of the disabled who have registered /received confirmation from the Department of Welfare.