Development of the All-Service Vehicle

The question in the minds of many transportation men today is: ``What type of highway vehicle may be constructed that will embody the maximum number of respective good points of trolley car, trolley coach, and motor bus?´´ The answer of one large eastern transport company to this question is the ``all-service´´ vehicle, a combination trolley coach and gasoline-electric motor bus. The principal items of interest in a highway vehicle are performance, rider appeal, operating economy, and construction. As to performance, it appears that much yet may be accomplished. Recent experiments indicate the importance of the contribution that can be made by the electrical engineer to developments in this field.