We'd better start earlier. We should allow for traffic delays.
In calculating profit, retailers must allow for breakage and spoilage.
It's best to allow for shrinkage when buying cotton clothes.
In work with this cloth, be sure to allow for shrinking.
We must allow for the train being late.
You must allow for five per cent wastage in transit.
Passengers should allow for accurate travel time to the airport in rush hour traffic.