The average operating cost per mile for motorcoach operators rose 34% to $1.90 from 1999 to 2001, said the American Bus Association's annual industry survey. That jump is mainly due to the fact that prices charged by operators have not kept pace with cost increases. The survey shows that the average charge per mile for charters and tours increased 13% since 1999 to $2.51. The average charge per hour for charters and tours increased less than 5% during the same period, to $63.07. The increase may also reflect an adjustment in the survey that included the costs of bus ownership, fuel, labor, supplies, insurance, tolls and driving expenses and the purchase of transportation. About 160 motorcoach operators participated in the survey. For more survey results, click on www.buses.org.