Household travel and tour-based behaviour: a case study from Saudi Arabia

The present study utilises the activity-based approach to investigate the nature and determinants of travel behaviour, and to reach a better understanding of travel complexity within households in an Islamic cultural environment. The main objectives of this study are, firstly to describe and explain the variation of behaviour between a sample of Saudi households and, secondly, to identify the likely response to specific transport policies. Results suggest that household head attributes (occupation, education and income), household socio-economic characteristics (car ownership, availability of a chauffeur, number of female students, number of females in employment and household size), and neighbourhood characteristics (density, accessibility to work) significantly influenced the choice of work tour type. The usefulness of applying tour-based analysis and its strength in showing interactions between household members' activities were confirmed in this study. Tour-based models revealed that Saudi households' travel activities were highly dependent on the household head, who is mainly responsible for serving household members' travel needs. In-depth interviews showed concerns about children's safety and security, lack of public and, in particular, school transport, ignorance of female travel needs, and car oriented neighbourhood design were main reasons for the high dependency on the car and its role as the dominant travel mode within Saudi cities. Interviewees were presented with five transport related policies to investigate their likely impact on households' travel behaviour. Interviewees agreed that the proposed policies would decrease car dependency and increase the travel independence of household members. Change in travel behaviour, in response to proposed policies, as identified by interviewees included decreased travel complexity (simpler tours), change in tour mode (more walking and public transport tours), and change in tour time. The study estimated a reduction in car trips generated by households as a result of introducing policies aimed to shift dependent groups (i.e. children and females) towards independence through walking and use of public transpor