The Dyson Lorries are used to help whenever there is an accident where the rails can't reach. They are also used for carrying cars and engines - one was once used to carry Duke to the Skarloey Railway.
- Season 4 - Sleeping Beauty and Thomas and the Special Letter
- Season 5 - Cranky Bugs, Horrid Lorry, Double Teething Troubles, Thomas and the Rumours, Sir Topham Hatt's Holiday, Busy Going Backwards, and Rusty and the Boulder
- ERTL (discontinued)