Abstract
The need for off-road vehicles as applied to commerce, warfare, and recreation is examined. Most of the developments in the mobility of off-road vehicles have had a primarily military background. The main impediments to off-road mobility are defined as major obstacles, soft ground, and rough ground. Optimization of track design for accommodating these impediments in military vehicles reveals the importance of the ratio of Mean Maximum Pressure to Mean Pressure of a traced vehicle. It appears that contemporary commercial cross-country vehicles contain limitations in their designs which culd be overcome with available knowledge. These limitations include soft ground mobility, and speed over rough ground. The role of hovercraft in providing off-road mobility is reviewed, and special attention is given to the most recent requirements for avoiding environmental disturbance when using off-road vehicles in the Canadian North.
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