$1\mathrm{.}1$ Explain why the following statements are incorrect:

$1\mathrm{.}1\mathrm{.}1$ The magnitude of axle load permitted on the South African roads is equal to the standard axle load.

$1\mathrm{.}1\mathrm{.}2$ During pavement structure design, sensitivity analysis assesses how changes in axle load magnitude affect the pavement class $($ES$).$