Abstract: A speed change control device in an automatic transmission for an automobile (16) equipped with a storage means (3) storing a correlation between an accelerator opening and a vehicle speed by which a shifting in each speed stage is commenced, and its shift point being deviated so as to execute a shift-up operation at a constant high vehicle speed when an accelerator opening is smaller than or equal to a specified value. An accelerator opening rate-of-change computing means (14) computes a rate-of-change of an accelerator opening on the basis of a detection signal from an accelerator opening detector (12) detecting the accelerator opening. Further, a shift-up prohibiting means (15) prohibits a shift-up operation when the accelerator opening rate-of-change computed by the accelerator opening rate-of-change computing means (14) is more than or equal to a specified value.

Abstract: An electronic control circuit memorizes shift patterns of a 2-range and an L-range in addition to a shift pattern of a D-range. An operation switch changes a shift pattern of the electronic control circuit to any shift pattern among those of the D-range, 2-range and L-range when a manual shift lever is in a D-range position. A lock mechanism prevents the manual shift lever from entering a 2-range position and an L-range position. A lock mechanism is releasable. A hydraulic circuit is set to a third speed mode when the manual shift lever is in the D-range position, the circuit is set to a second speed mode when it is in the 2-range position, and the circuit is set to a first speed mode when it is in the L-range position, respectively, in case where the shift valves are not working.