Cabin Baggage Restrictions
"Strictly one item of cabin baggage is permitted per passenger (excluding infants) weighing up to 10kg with maximum dimensions of 55cm x 40cm x 20cm (your handbag, briefcase, laptop, shop purchases, camera etc. must be carried in your 1 permitted piece of cabin baggage). "
On a typical flight if everyone complies with this would there be enough room in the overhead compartments to accommodate the stated 1 piece of cabin baggage plus say a coat for all passengers?