DTT HGV Load Security

Question 1

Under EU load securing standards (EN 12195), what force must the load securing system withstand in the forward direction?

Accepted Answer

80% of the cargo weight

Answer

EN 12195 requires that load securing must be able to withstand a force of 0.8g (80% of cargo weight) in the forward direction, 0.5g (50%) to the sides, and 0.5g (50%) to the rear. This accounts for forces during braking, turning, and acceleration.

Question 2

What is 'friction securing' in load security?

Accepted Answer

Using the friction between the load and the vehicle floor to prevent movement, supplemented by tie-down lashings to increase the friction force

Answer

Friction securing relies on the friction between the load and the loading surface. Tie-down lashings increase the vertical force on the load, which increases friction. Anti-slip mats significantly increase the friction coefficient and reduce the number of lashings needed.

Question 3

What is the primary responsibility of the driver regarding load security?

Accepted Answer

To check that the load is properly secured before departure and at regular intervals during the journey

Answer

While the loader has initial responsibility, the driver is legally responsible for ensuring the load is secure before departure and must check the load at appropriate intervals during the journey. The driver must refuse to drive if they believe the load is unsafe.

Question 4

What is an 'anti-slip mat' and how does it improve load security?

Accepted Answer

A rubber or friction-enhancing mat placed between the load and the vehicle floor that increases the friction coefficient, reducing the number of lashings needed

Answer

Anti-slip mats (friction mats) increase the coefficient of friction between the load and the floor from around 0.2-0.3 (wood on steel) to 0.5-0.6 or higher. This significantly reduces the number of tie-down lashings required and improves overall load stability.

Question 5

What should you do if you notice the load shifting during a journey?

Accepted Answer

Stop as soon as it is safe to do so, re-secure the load, and do not continue until the load is properly secured

Answer

A shifting load is extremely dangerous — it can cause the vehicle to become unstable, overturn, or shed its load onto the road. Stop safely as soon as possible, assess and re-secure the load. Never continue driving with an insecure load.

Irish DTT Truck/Bus Practice Test

Irish DTT Truck/Bus Practice Test

DTT HGV Load Security