THIS STUDY FOCUSSES ON TIME-SERIAL CHANGES IN ZONAL CHARACTERISTICS OF 23 WARDS IN TOKYO WITH REGARD TO ZONAL SOCIO-ECONOMIC ACTIVITIES. IN THIS CONTEXT, TOKYO OF 23 WARDS IS DIVIDED INTO 113 ZONES, BECAUSE EACH ZONE CAN BE DESCRIBED AS SOCIO-ECONOMIC DATA (IN 1968, 1978 AND 1988). A PRINCIPLE COMPONENT ANALYSIS (PCA) IS APPLIED TO DEFINE SOME LEVELS OF ZONAL ACTIVITY. BUSINESS TRIP GENERATION AND ATTRACTION MODEL IS THEN CALIBRATED TO ESTIMATE THE AMOUNT OF TRIPS WITH PCA SCORES AS EXPLANATORY VARIABLES.
