The following might help :
Info provided by Nick34 :
Class 4 and 5 Driving License
1.Where can I apply for Class 4 and 5 driving license?
You can apply for Class 4 and 5 driving license at Pan Country
Driving Centre.
2. Where is Pan Country Driving Centre?
The driving centre is just by the side of Jurong Stadium. Road name
is Fourth Chin Bee Road.
3.How much will is cost?
There is a package that allows you to enroll for class 4 and 5
together at the cost of about $750. If you are just going for the
class 4 driving license, it will cost you about $450 just for one
license.
4.What is the difference between class 3 from class 4 and 5 ?
The difference is mainly the turning radius and the braking. The
turning radius is wider then a normal class 3 vehicle as it is
longer. Braking system used on Class 4 and 5 is different from
class 3 as they are using air brakes. You must get used to the air
brake if not you gonna jerk your way throughout on a class 4 or 5
vehicle.
5.What isthe procedure to getting a class 4 licence and the
duration?
The procedure is the same as you enrol for a class 3 driving
license and the duration is about 1 - 2 months time before you
actually have your first practical lesson. So alone class 4 will
take about 3 months and the same for class 5.
6.Can I book for all practicals one shot?
Yes you can. Even if you wish to change the practical date, just
give them a call. Forms of contact can be found in the Links
section below.
7.What is the min. requirements for class 4 and 5 ?
You must be 21 of age and must not have more then 12 points in your
Driver Improvement Points System(DIPS)
Juz to add, maybe they have upgraded they lorries but I dont think
that the lorries are using air brakes for class 4. Any bros
recently took class 4 wanna confirm?
You are required to secure the dummy boxes at the rear of the lorry
and also estimate the height of the measuring staff being held by
the tester. I was fortunate enough to be the last batch which
needn't estimate the height jus got to do the securing but had to
do the height estimating for my class 5. Not to worry, you will be
taught to do the securing and estimation as you progress thru your
lessons.