Rule
A load must be secured
Anything carried must be secured so that it cannot shift, fall off, or cause danger during normal driving, including hard braking and avoidance steering. This applies to the boot of an ordinary car as much as to a van.
Why an unsecured load is dangerous and how loads are actually held
Anything carried must be secured so that it cannot shift, fall off, or cause danger during normal driving, including hard braking and avoidance steering. This applies to the boot of an ordinary car as much as to a van.