A method (400) for torque split arbitration in a vehicle (10) includes identifying at least one route characteristic (402) of a portion of a route being traversed by the vehicle (10). The method further includes determining a target torque split (406) based on the at least one route characteristics. The method further includes generating a first output torque demand (410) that corresponds to a product of a first portion of a target torque demand to be provided by a first propulsion unit (120-1) and a ratio of a total propulsion system torque demand and the target torque demand. The method further includes generating a second output torque demand (412) based on the first output torque demand.