For Malaysians who have been staying in Singapore for a long period and would like to convert their Malaysian license to a Singapore license, they need to submit the driving history record during their application for conversion. This driving record history can be retrieved from any JPJ (Jabatan Pengangkutan Jalanraya @ Road Transport Department) branch in the country.
As agreed between the two countries' government, a citizen can only hold one license from either of these country. The conversion is only is only applicable for class D and B2 license.
Please let me loosely translate the items in the document on left to English. The document is the letter accompanying the driving history record.
Sir,
Application for Validation of the Malaysia Driving license
For the purpose of Singapore Driving License Application
With reference to your application dated for the subject above
2. Your application has been approved. With this, listed below are the terms of this application for your observation:
2.1 Your license is automatically cancel beginning from the time of issuing of the validation letter.
2.2 If you did not apply or manage to obtain a Singapore driving license, you have to return the original validation letter in order for you to get Malaysia driving license again. This should not happen more than 3 years from the date of the validation letter.
2.3 If you would like to get back the Malaysia driving license, you have to return the Singapore driving license together with the driving history report from Singapore Traffic Police. The class of driving license returned to you is based on the what stated in the driving history report from Singapore Traffic Police. (The Singapore driving license must not be more than 3 years from expiry date.)
2.4 You can only apply for motorcycle class (B) and motorcar class (D) Singapore driving license. Any other classes as stated in your Malaysia driving license shall not be converted unless otherwise stated and recognized by Singapore Traffic Police.
2.5 When you obtained your Singapore driving license, the Malaysia driving license will no more be valid even though the expiry period has not lapsed. Vocational license will also stop to be valid on concordance with the Section 27(6) Road Transport Act 1987.