Passing the Riding Theory Test (RTT) is a compulsory requirement for obtaining a driving license of type Motorcycle 2B in one of the driving centres of the Singapore Traffic Police. You must also complete your riding training course, and pass the Practical Riding Test (PRT) in order to obtain a Class 2B Motorcycle Licence.
You can only book for the Riding Theory Test (RTT) through the authorised driving schools as stated :
There is 50 questions in the computerised test and you need to attain a minimum score of 45 out of 50 in order to pass the test. The time given to complete the test is 50 minutes. Upon completion of the test, your result will be on the screen so that you will know your result on the spot.