SLSI Appoints Ex-FRA Official: Hazmat Training Gets Automation Boost
SLSI names Chris Machenberg, former FRA official, as Hazmat Program Director, preparing for automated rail regulations. This ensures future safety standards.

SLSI Taps Former FRA Official Chris Machenberg to Lead Hazmat Programs Amid Push for Automation Regulations
The Short Line Safety Institute (SLSI) has appointed veteran rail safety expert Chris Machenberg as its new Hazardous Materials Program Director, a strategic move that comes as the industry grapples with the future of hazmat transport in an era of increasing automation. Machenberg, a former Federal Railroad Administration (FRA) official, will spearhead SLSI’s critical training initiatives as federal agencies begin to modernize hazmat regulations for highly automated rail systems.
| Category | Details |
|---|---|
| Appointment | Chris Machenberg, Hazardous Materials Program Director |
| Organization | Short Line Safety Institute (SLSI) |
| Predecessor | John Walsh (Retiring January 2026) |
| Key Experience | Former FRA Deputy Staff Director, Hazardous Materials-Field Operations |
| Industry Context | PHMSA review of Hazardous Materials Regulations (HMR) for automated systems |
Main Body:
The Short Line Safety Institute (SLSI) has officially named Chris Machenberg to the pivotal role of Hazardous Materials Program Director. In this position, Machenberg will be responsible for the oversight and delivery of SLSI’s comprehensive online and in-person training programs, which are vital for railroad safety professionals and first responders across the country. He is set to succeed John Walsh, who is planning to retire in January 2026, ensuring a smooth leadership transition. SLSI Executive Director Tom Murta praised the appointment, stating, “[Machenberg’s] experience from a boots-on-the-ground craft employee to the highest levels of hazmat program management in the rail industry, coupled with his experience at FRA, will benefit any railroad that takes advantage of our hazardous materials training programs.”
Machenberg’s appointment is particularly timely given the evolving regulatory landscape for hazardous materials transport. The U.S. Pipeline and Hazardous Materials Safety Administration (PHMSA), in collaboration with the FRA, recently issued an advance notice of proposed rulemaking (ANPRM) to gather stakeholder input on modernizing the Hazardous Materials Regulations (HMR). This initiative specifically aims to address the challenges and opportunities presented by highly automated transportation systems in rail. Machenberg’s deep understanding of federal regulations and operational safety will be instrumental in helping the short line industry navigate these potential rule changes and ensure compliance with future standards for transporting hazmat via automated technologies.
With a distinguished career spanning nearly three decades, Machenberg brings a wealth of practical and managerial experience to the SLSI. He began his career in operational roles as a conductor, locomotive engineer, and yardmaster before advancing into management positions with increasing responsibility for hazmat shipments and safety. His federal service as the FRA’s Deputy Staff Director for Hazardous Materials-Field Operations provides him with a unique perspective on enforcement and regulatory development. Furthermore, his previous leadership roles, including serving as chairman on the Association of American Railroads’ (AAR) prestigious Tank Car Committee, solidify his reputation as a leading expert in the field.
Key Takeaways
- Strategic Leadership:** Chris Machenberg, with nearly 30 years of rail and FRA experience, is set to lead SLSI’s hazmat programs, succeeding the retiring John Walsh.
- Focus on Future-Ready Training:** The appointment underscores the need for advanced hazmat training as the industry prepares for new technologies and regulations.
- Navigating Automation:** The hire is critically timed, as federal agencies like PHMSA are actively reviewing how to adapt hazmat regulations for highly automated transportation systems in the rail sector.
Editor’s Analysis
This is more than a routine personnel change; it is a strategic move by the Short Line Safety Institute to position itself at the forefront of a major industry evolution. Placing a former high-level FRA official with deep operational and regulatory expertise at the helm of hazmat training signals the short line industry’s proactive stance on safety and innovation. As technologies like automated train operations (ATO) advance, the rules for safely transporting hazardous materials must evolve. Machenberg is uniquely qualified to bridge the gap between current best practices and future regulations, ensuring the nation’s short line and regional railroads are prepared for the next generation of logistics and transportation.
Frequently Asked Questions
- Who is Chris Machenberg?
- Chris Machenberg is the newly appointed Hazardous Materials Program Director for the Short Line Safety Institute (SLSI). He is a veteran of the railroad industry with nearly 30 years of experience, including a senior role as Deputy Staff Director for Hazardous Materials-Field Operations at the Federal Railroad Administration (FRA).
- What is the Short Line Safety Institute (SLSI)?
- The SLSI is an independent, non-profit organization dedicated to improving the safety culture and performance of short line and regional railroads. It provides safety assessments, training programs, and educational resources to railroad professionals and first responders.
- Why is this appointment significant for the rail industry?
- This appointment is significant because it comes at a critical time when federal regulators are exploring new rules for transporting hazardous materials using highly automated systems. Machenberg’s extensive experience with both on-the-ground operations and federal regulations makes him a key figure in preparing the short line industry for these future technological and regulatory shifts.



