The process of determining the maximum force a vehicle can apply to the ground or rail to overcome resistance and initiate or maintain motion is fundamental to vehicle design and operation. For example, understanding this force is critical for a locomotive pulling a heavy freight train up an incline or a tractor maneuvering through muddy fields. The resistances considered often include rolling resistance, grade resistance, and aerodynamic drag.
Accurately computing this force is essential for predicting vehicle performance, optimizing efficiency, and ensuring safety. Historically, estimations were often based on simplified models and empirical data. Modern approaches leverage sophisticated computer simulations and data analysis techniques, allowing for more precise predictions and optimized designs. This has led to significant advancements in various fields, from automotive and railway engineering to off-road vehicle design.