When leaving The Port of Calais you will automatically join the main road heading around the town. After a few kilometres follow the signs to Boulogne. You will then join the A16 which becomes a toll road at Boulogne at the south side of a long viaduct. Take a ticket from the automatic booth. At Junction 24 leave the motorway. There is an automated barrier within a few hundred metres so please ensure that you either have Euros to hand (can be notes and it does give change)or a credit/debit card will also suffice. After leaving the toll take the second exit on the roundabout follow all signs to Le Crotoy. Always remember to drive on the right in France.