This inventive colour picture book uses the metaphor of a train to teach basic conventions of conversation to children with autism spectrum disorders (ASDs). Engines are like greetings; they get the train going. Freight wagons are like different speakers' turns; it is good to have at least a few when you are in conversation. A set of points guiding a train from one track to another is like a tactful change in the topic of conversation. When a conversation veers off-topic it is like a derailed train. As well as attractive colour photographs of trains, the book contains engaging photocopiable worksheets and colouring pages to help promote skill generalisation.