This chapter summarizes some of the results from the Working Group "National Travel Surveys" in COST Action 355, but all the 50 presentations could not be taken into account. Thus, we focus on three crucial topics : the periodicity of data collection, but also its longitudinal aspects (advantages of continuous surveying, repeated cross-sections versus panel surveys, etc.), new technologies for improving the efficiency and accuracy of mobility surveys (computer assisted phone, web,... interviews ; GPS, GSM, RDS, etc.), innovative approaches, with the examples of qualitative surveys combined with conventional quantitative ones, and of Biographical approaches.