What defines the upper and lower rpm shift limits of a truck transmission?

A) number of gear ratios
B) engine torque rise profile rpms
C) final drive carrier ratio
D) tailshaft rpm

Rpm Shift Limits

Refers to the recommended revolutions per minute (RPM) range within which gear shifts should occur to optimize performance and fuel efficiency in vehicles.

Transmission

A mechanical system in vehicles that transfers power from the engine to the drive axle, modulating the power received according to speed and load.