This thesis investigates the design and validation of adaptive brake pedal characteristics for brake-by-wire systems, with the objective of improving the coherence between driver input, vehicle response, and perceived pedal feel. In electronically controlled braking architectures, the absence of a direct hydraulic connection makes it necessary to reproduce a natural and predictable brake sensation through the control strategy itself. For this reason, the study focuses on the definition of a travel-to-torque characteristic able to balance modulatability in low-demand braking with promptness under more severe braking conditions. A bilinear pedal mapping is adopted as the reference solution and then extended through two adaptive logics.