Traction engines steam engines to haul loads on the roads developed in the mid 1860s and were usually dirty, noisy and somewhat crude to handle. This book brings together much information about these engines, from the earliest to the latest, about how they worked and what they did. Attention is also given to the various derivatives of the traction engine the humble portable, the well-known steam roller, the steam tractor, majestic road locomotive, ploughing engine and, last but not least, the King of the Road, the glorious and glittering showman's engine. The informative text is accompanied by illustrations that show something of the age in which traction engines worked and of the age when they became treasured historic relics. Engines appear at rallies and other events all over Great Britain and in many other countries. On these occasions they are visited and admired by thousands of people and are now part of our engineering heritage.