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Air travel was the most expensive mode of transportation for a traveler covering 100km in 2021, with an average price of 15 U.S. dollars. The travel cost for a private vehicle (highway) and high-speed train (TAGV) are roughly the same, around 12 U.S. dollars. Intercity train services appear more economical for the traveler, with an average price of about 9 U.S. dollars. Low-cost services (airplane, TAGV, and SLO coaches) are more than twice as inexpensive on average for the traveler compared to their traditional equivalents.