The situation of four social groups with low mobility is analysed in detail; these are young people, housewives, the elderly and the poor. Lack of use of a car for some or all journeys is the main constraints, but problems with other modes are also experienced by some groups. The consequenses of low personal mobility for fulfilment of activities is examined for each of the more common journey puposes. For essential journeys (such as work and shopping) distances travelled are shorter and hence choice of facility is less. For discretionary purposes (social and recreation) fewer journeys are usually made. The relationship between travel patterns and the location of home and facilities is also noted