sentences:  Ashford was one of the towns that became a hub when the roads were turnpiked in the second half of the 18th century.Today it is on the M20 motorway which offers easy access to London, Maidstone and Folkestone, with junctions 9 and 10 serving Ashford.The A20 runs almost parallel with the motorway, and the A28 allows access to Canterbury and Tenterden.