Inhibiting high speed directional shifts based on whether controlled throttle shifting is enabled or disabled

A method performed by a transmission control system, comprising:

• determining when engine speed regulation during gear shift is enabled or disabled;
• selecting a speed threshold, for inhibiting a directional shift, based on when the engine speed regulation during gear shift is enabled or disabled;
• determining that a machine speed satisfies the speed threshold;
• and
• inhibiting the directional shift based on determining that the machine speed satisfies the speed threshold.

A machine, comprising:

• an engine;
• an engine control unit to control the engine;
• a transmission;
• and
• a transmission control system to control the transmission, wherein the transmission control system is configured to:
• determine when engine speed regulation during gear shift is enabled or disabled for the machine;
• select a speed threshold, for inhibiting a directional shift of the machine, based on when the engine speed regulation during gear shift is enabled or disabled for the machine, wherein the speed threshold is a first speed threshold when the engine speed regulation during gear shift is enabled or the speed threshold is a second speed threshold when the engine speed regulation during gear shift is disabled;
• compare a speed of the machine and the speed threshold;
• and
• inhibit the directional shift for the machine based on comparing the speed of the machine and the speed threshold.