This paper is part of a coherent research program developing an informationally emergent physical framework. P22 derives effective relativistic kinematics from the combined informational and geometric coherence properties established in previous papers. The analysis shows how Lorentz-invariant kinematical structures arise as effective constraints governing coherent informational dynamics, without assuming relativistic symmetry at the fundamental level. The work clarifies the informational origin of relativistic transformations and causal structure, providing the kinematical foundation required for the emergence of relativistic field dynamics and gravitational behavior addressed in subsequent papers. While this paper can be read independently, its full role is understood only within the complete sequence of papers (P00–P32). The reference entry for the full framework, including priority timestamp and complete context, is:DOI: 10.5281/zenodo.18369063