 1IND   = VARIABLES INDEPENDANTES            INDEPENDENT VARIABLES
 1Ti      DEPLACE. DE ORIG_i A toute DEST.   TRIPS FROM ORIG_i TO ALL DEST.
 1Tj      DEPLACE.DE TOUTE ORIG.A toute DEST.TRIPS FROM ALL ORIG. TO DEST_j
 1Util_BC4UTILITE de la VARIANTE bus_bc4     UTILITY from VARIANT bus_bc4
 1TiTj    PRODUIT Ti*Tj                      PRODUCT Ti*Tj
 1CONSTANTCONSTANTE DE LA REGRESSION         REGRESSION CONSTANT
 
  MATRICES 
  DIST_OD CAR_RT < 100 min                   CAR_RT < 100 min

