TABLE 1 Definitions of the Main Variables,,,,,,,
Name,Definition,Sample,,Estimation,,Forecasting,
,,Period,Size,Period,Size,Period,Size
Number of tickets/cards sold,,,,,,,
SMT,Single-trip Metro,1987:1–2002:12,192,1987:1–1999:12,156,2000:1–2002:12,36
10MT,10-trip Metro,1987:1–2002:12,192,1987:1–1999:12,156,2000:1–2002:12,36
SBT,Single-trip bus,1988:1–2002:12,180,1988:1–1999:12,144,2000:1–2002:12,36
10BT,10-trip bus,1988:1–2002:12,180,1988:1–1999:12,144,2000:1–2002:12,36
TC,Monthly travel card,1987:1–2002:12,192,1991:1–1999:12,108,2000.1–2002:12,36
JTC,Junior monthly travel card,1988:2–2002:12,179,1991:1–1999:12,108,2000:1–2002:12,36
Rate of growth of deflated prices,,,,,,,
DDPSMT,SMT,1987:1–2002:12,192,1987:1–1999:12,156,2000:1–2002:12,36
DDP10MT,10MT,1987:1–2002:12,192,1987:1–1999:12,156,2000:1–2002:12,36
DDPSBT,SBT,1988:1–2002:12,180,1988:1–1999:12,144,2000:1–2002:12,36
DDP10BT,10BT,1988:1–2002:12,180,1988:1–1999:12,144,2000:1–2002:12,36
DDPTC,TC,1987:1–2002:12,192,1991:1–1999:12,108,2000:1–2002:12,36
DDPJTC,JTC,1988:2–2002:12,179,1991:1–1999:12,108,2000:1–2002:12,36
Notes: All the variables measure the number of tickets/cards sold. TC and JTC are monthly passes that can be used without limit. The price variables are measured in rates of growth of deflated prices. The deflator used was the Consumer Price Index published monthly by the Instituto Nacional de Estadνstica of Spain.,,,,,,,