They got quota on the number of passers everyday lah. If you look too young they think you not steady enuff to do a steering wheel. If you dress very sexy cuz tat time I see got a lady wear those singlet and then a tight short shorts for practical. Tester is male leh.
As in all test, got a bit of kelong here and there lah

Btw it took me 3 times and tat time is I was still in NS leh... so cham book out and then book in and then must fit your schedule with the NS schedule and must seek approval first.