Bigger loads of hay and fodder will be able to be carted on WA roads after a Federal Government drought-assistance measure came into effect last week.
Under the national drought assistance notice, heavy vehicles up to 4.6m high and 2.83m wide no longer require a permit to access State-controlled road networks.
Previously the limits were set at 4.3m high and 2.5m wide.
The changes are expected to remove the need for upwards of 6000 consents per year.
The consents are believed to be the equivalent of up to 54,000 days each year applying and waiting for permits.
Permits will still be required through the National Heavy Vehicle Register portal for access to some local government roads.