A literature review was made on the relation between physical properties of the soil and trafficability. The soil characteristics in the Muda area was studied. Effect of water table level on.soil strength was noted to be significant. In the study on the traction phenomenon in soft paddy soil, it becomes obvious that both bearing and traction capacities of the soil must be considered in the design of the wheel. Design specifications of a tyre for typical soft padi soil condition were derived from theory and tyres meeting these specifications were acquired and field tested. The results obtained strongly indicate good correlation between the actual field performance of the tyre and the theory presented.

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