Bob Huisman is Manager Maintenance Research & Development at NS, the national railway operator in the Netherlands. His group is responsible for the development and implementation of methodologies, tools and techniques for future maintenance and service logistics, and delivering related business support. Main issues of current interest are Predictive Maintenance, Maintenance Program Optimization and Safety Assessment, Planning & Scheduling, and Service-Process Capacity Computation. Bob has a background in engineering, and a few decades of experience in the railway industry.