1. The vehicles with a maximum permissible weight of over 7.500 kg and length of over 13 m should have, for their identification, at the rear part:
One or two metal plates with alternating oblique stripes of red fluorescent material and yellow reflecting material.
Two or four plates with yellow reflecting material one or two of which have alternating oblique stripes and one or two have special symbols of red fluorescent material.
One or two plates with red fluorescent material and yellow reflecting material on which special symbols can be impressed.
2. Many accidents have been recorded in the past where lorries jammed under bridges or which were caused because the height of the bridge was limited or the strength of the bridge was for a lighter weight. Therefore:
The lorry driver should load their vehicle up to the maximum permissible height and weight, so as not to cause accidents when crossing bridges or passing under them.
The lorry driver should load their vehicle up to the maximum permissible height and weight, but also check (on the basis of the relevant traffic signs) height of every bridge (if passing under them) and the maximum permissible weight (if crossing them).
3. What risk does a loaded lorry, when negotiating a dangerous curve, run?
It may lose its balance and its load may be disconnected, because the centre of gravity is set quite high.
The body may touch the road and the load runs the risk of losing its balance or being destroyed due to the shaking.
It may develop a high speed due to the force exerted by its weight.
4. What risk does a loaded lorry, when crossing a dangerously rough road, run?
It may develop a high speed due to the force exerted by its weight.
The body may touch the road and the load runs the risk of losing its balance or being destroyed due to the shaking.
It may lose its balance and its load may be disconnected, because the centre of gravity is set quite high.
5. What risk does a loaded lorry, when crossing a dangerous downhill, run:
The body may touch the road and the load runs the risk of losing its balance or being destroyed due to the shaking.
It may develop a high speed due to the force exerted by its weight, which will result in the intense use of the brakes, their overheating and loss of their effectiveness.
It may lose its balance and its load may be disconnected, because the centre of gravity is set quite high.
6. On traffic signs that indicate dangers due to the carriage of hazardous materials, the first number indicates:
Secondary dangers.
The main danger.
7. What is the range of the lowest permissible pressure of compressed air in a pneumatic brake system?
About 14-15 bar.
About 9-10 bar.
About 5-6 bar.
8. The aim of the anti-freeze fluid pump in a braking system with compressed air is to:
Maintain pressure of the system steady.
Feed the system with compressed air, so that rates of higher and lower function pressure are maintained steady in the air containers.
Inject the compressed air with anti-freeze fluid, so that the various components do not freeze at very low temperatures.
9. The exhaust brake is used:
On downhills.
On uphills.
At harsh braking.
10. The aim of the connecting rod is:
To transfer the kinetic energy of the piston to the crankshaft.
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