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Abstract: In this paper, we use continuous urban structure instead of zonal model, try to calculate unbiased excess commuting with joint distribution of homes and workplaces developed by , and describe the relationship between urban structure and commuting distance explicitly and theoretically for generalized home–workplace assignment pattern. We simplify the quadrivariate distribution model to a model with three important parameters: the spread of homes, the spread of workplaces, and the spatial correlation of homes and workplaces. Then we show that excess commuting and capacity utilization are expressed by the imbalance and the spatial correlation of jobs–housing structure in a theoretical context, moreover it explicitly evaluates targeting US and Japanese/Korean cities. [Copyright &y& Elsevier]