Speed change control system for a vehicle

摘要

A speed change control system includes a speed change control section (62) for setting a speed change value of a stepless speed change device (20); a speed change operational tool (30) for providing the speed change control section (62) with a speed change command to be applied to the stepless speed change device (20); a constant speed travel operational device (90) for providing the speed change control section (62) with a changing command for changing a constant speed mode speed change value which is a speed change value at the time of the constant speed mode, a shifting command for shifting to the constant speed mode and a departing command for departing from the constant speed mode; and a constant speed travel management section (63) for causes the speed change control section (62) to execute the constant speed mode with the constant speed mode speed change value retrieved from a storage section (64), based on the shifting command from the constant speed travel operational device (90).