[cheekopekman]

SBS is BS ??
they got shift roster base on the day, time you aboard the bus if you can recall the time
and most important the bus number , they DO CAN TRACE who is that driver driving that bus that timing base from the shift roaster given to the drivers on that day.

Agreed with you lah!  Every bus driver has a duty roster one lah! You never did NS before meh?