This paper deals with the riding behavior of commuters who take buses from a living place to a work place in rush hours.The equilibrium bus riding model proposed in this paper incorporates such costs as that associated with early and late arrival as well as body congestion in buses.The optimal time headway for dispatching buses is derived in the case of fixed demand.In the elastic demand case,the fare level,the number of buses required,the net profit from pricing and the system net benefit are obtained and ...