01 / RMCVIWORKING PAPER · 27 AUGUST 2026
CRITICAL RAILWAY COMPONENTS:
ANTICIPATING
SUPPLY RISKS.
Author: Issame Garchali · GICMEI · Version 1.0 · French / English / العربية
A component that is difficult to source, repair or requalify can extend equipment downtime. This paper examines how dependencies on materials, components and suppliers can affect railway maintenance and service continuity.
What the RMCVI framework proposes
An exploratory screening framework to prioritise vulnerabilities: upstream supply risk, functional dependency, substitution options, qualification constraints and logistics exposure.
Independent applied research, not peer-reviewed. RMCVI remains an exploratory framework to be calibrated and validated against industrial data.
DOI : 10.5281/zenodo.22127446
02 / DROCPREPRINT · 24 AUGUST 2026
MULTIMODAL MOBILITY:
UNDERSTANDING THE CAPACITY
ACTUALLY AVAILABLE.
Author: Issame Garchali · GICMEI · Version 1.1 · French / English
How can mobility be coordinated around resources that can actually be mobilised? The DROC — Dynamic Residual Operational Capacity — framework proposes moving beyond route optimisation alone to consider the operational capacity available across different operators.
An approach grounded in operational realities
The framework considers technical condition, maintenance constraints, energy, resources, existing commitments and uncertainty. It explores federated coordination in which each operator retains authority over its systems.
Conceptual framework and research agenda, not peer-reviewed. Performance remains to be demonstrated through systematic review and comparative simulation.
DOI : 10.5281/zenodo.22078162
