The trolleybus

The paper relates to the trolleybus and the principles upon which this double-deck vehicle is now constructed. It is sectionalized under headings dealing with the design of the electrical equipment, the chassis transmission gear and running units, the construction of the trolleybus as a whole, the method of current collection, and the overhead transmission system. The final section of the paper reviews the various factors which have led to the adoption of the trolleybus in this country. Throughout the paper the schematic diagrams which show the connections for the various apparatus described, and the drawings of the vehicular components, relate to the latest types of trolleybuses.