Vehicle transmission control apparatus

A vehicle transmission control apparatus comprising:

• an expected-acceleration calculator configured to calculate an expected acceleration of a vehicle based on at least an engine load and a vehicle speed;
• an actual-acceleration calculator configured to calculate an actual acceleration of the vehicle;
• an uphill determination device configured to calculate an uphill determination value based on a difference between the expected acceleration and the actual acceleration and configured to calculate a corrected uphill determination value by subjecting the uphill determination value to moderating calculation using a moderating coefficient and to update the corrected uphill determination value in accordance with the moderating coefficient, the uphill determination value serving as an index for determining whether or not the vehicle is climbing an uphill;
• a transmission-characteristic selecting device configured to select one of a plurality of transmission characteristics based on the corrected uphill determination value, the transmission characteristics including at least a transmission characteristic for climbing an uphill and a transmission characteristic for driving on a flat road;
• and
• a transmission controller configured to perform transmission control based on the transmission characteristic selected by the transmission-characteristic selecting device.