TOWING TEST:
ANSWERS
1. ATM: (c) Aggregate Trailer Mass; GTM: (b)
Gross Trailer Mass; GVM: (a) Gross Vehicle
Mass; GCM: (c) Gross Combination Mass.
2. (c) Ratings
3. (c) Actual masses
4. (c) The actual mass of the empty caravan
with all OEM equipment and options fitted,
as specified on the sales contract, as it
leaves the supplier, with empty water tanks
and empty gas cylinders, and without any
luggage or personal effects. This is
measured with the jockey wheel and tyres
on the weighbridge
5. LT: (b) Light Truck; P: (c) Passenger (car);
225: (c) Section Width (mm); 85: (b) Profile
Ratio (%); R: (a) Radial Construction;
16: (b) Rim Diameter (“); 90: (b) Load
Rating; Q: (a) Speed Rating
16. (b) The caravan/trailer will likely develop a
dangerous sway (snaking) situation
17. (c) Handling, steering and safety will be
dangerously impaired, and the towbar
may fail
18. (c) As close as possible to the axle(s)
19. (b) The vehicle will sway and wallow, and
the outer edges of the tread will wear out
20. (a) The vehicle will skip and bounce, and the
centre of the tread will wear out
21. (b) ATM rating minus Tare mass
22. (a) Regularly checked for wear and
adjusted evenly
23. (c) Should be checked for correct operation
before setting off on a trip
24. (b) Must be used so as to obtain a clear field
of view along each side of the vehicle
6. (a) 50mm 25. (b) Appreciably longer
7. (c) Australian Design Rule 26. (c) Appreciably longer
8. (a) Australian Standard 27. (b) Slow down because of the additional
centrifugal force and the risk of swaying
9. (c) The correct tyre/rim combinations, and
the recommended inflation pressures for all
tyre sizes, to suit the load carried by the tyre
10. (b) No
11. (c) If the GTM rating is above 750kg
12. (b) If the GTM rating is above 2000kg
13. (c) Anti-lock Braking System
14. (a) No
15. (c) Should be around 10% of the caravan/
trailer mass (if not otherwise advised by the
manufacturer, in writing)
28. (b) Increase the kinetic-energy – and
braking distance – by a factor of 4
29. (c) Slow down a little and firmly hold the
steering wheel in case a sway starts
30. (c) Not panic and not make any sudden/
severe manoeuvres, but gently slow
down, ensuring that you keep steering in
the direction that you need to