Safety is our number one core value. We are committed to delivering the safest and most reliable systems to our customers and the communities we serve. We work in a manner that respects the health, safety and welfare of everyone on the job and in the communities where we work, to ensure everyone gets home safe every day.


We believe that quality is the responsibility of the entire project team and we are committed to providing the necessary training, support, materials, and tools to consistently achieve excellence in quality.


The relationships we build with our customers are fundamental to everything we do. We have a proven track record of exceeding client expectations by committing ourselves to excellence to ensure the highest possible standards of service.


Our team provides unparalleled expertise in the rail and transit industry. This expertise ensures the systems we work on meet or exceed customers' expectations. Project success not only depends on the company, but on the people within the company.


We strive to create a workplace that reflects the communities in which we work, where everyone feels empowered to bring their full authentic selves to the job. Our commitment to inclusion encompasses ethnicity, gender, age, religion, identity and experience.

Employees attend a meeting.


Project Management

A worker sits at a control panel on a laptop.


Systems Engineering and Integration

A construction site at a train crossing.


Signal Construction

A worker testing an electrical panel.


Testing and Commissioning

Modern Railway Systems

We are a recognized leader in delivering turnkey signal systems from conceptual design through certification of installed systems. We have completed or are currently involved in over $750 million in rail systems projects. Our team has extensive experience in rail systems management, design, procurement, construction, testing and integration. Our primary focus is on the train control disciplines, but our capabilities also extend to the communications, power distribution and rail operation disciplines.

We provide the safest, most innovative and cost-effective systems solutions available. We work as an integrated team with our customers, their representatives, and other contractors involved in our projects. We work on systems for light rail, commuter rail, streetcar and Class I railroads across the United States and Canada. Our history and experience with train control projects highlights our ability to provide a completely integrated project from design to implementation.

We are at the forefront of the industry with our implementation of Positive Train Control (PTC). We have installed PTC systems on more than 280 miles of commuter rail lines throughout the nation. In addition, we were the first to successfully implement the FRA PTC Type-Approval for Enhanced-Automatic Train Control in the United States.

Stacy and Witbeck is the parent company of MRS, MCS and MML, specializing in construction and management services on complex rail and transportation projects.


Modern Communications Systems (MCS) provides design, furnish, integration, installation, and testing of all communications systems for rail and bus transit systems.


Modern Manufacturing Limited (MML) is a custom manufacturer of precision metal fabrications, specializing in railway equipment. MML is the exclusive supplier to many Class I railways and transit owners in North America.











Rail Systems Solutions, the predecessor to Modern Railway Systems, is established in 2001 and operates for nearly a decade offering safe and effective signaling solutions.

San Francisco street car comes up over a steep hill.

RSS is acquired by Stacy and Witbeck, becoming Modern Railway Systems.

The blue Portland Street car passes through a Portland street.

MRS expands to Washington with Sound Transit’s U830 Light Rail Project and continues our strong relationship with Utah Transit Authority, winning our first streetcar project.

We are awarded our first job with SMART in California on the initial operating segment and with AMTRAK on the Michigan East CBTC Project. We continue our success in Colorado winning the RTD I-225 Extension and Edmonton Northeast Signal Upgrade Project in Canada.

We begin work on our first Positive Train Control (PTC) project for TriMet in Oregon, being the first to have successfully implemented Enhanced-Automatic Train Control in the United States.

We acquire Canadian-based Custom Steel Manufacturing, now Modern Manufacturing Limited. We win the SANDAG Light Rail Systems Project in California.

We are awarded our first electrification project with Caltrain and expand into Arizona with the Valley Metro Gilbert Road Light Rail Extension.

MRS acquires Rail Services Corporation, now Modern Communications Systems (MCS). We continue to expand moving south to Texas winning the Capital Metro PTC Project.

We continue to grow our success, winning the Brightline Zone 3 Project in Florida. In addition, we strengthen our relationships with new projects for Amtrak, SMART, Valley Metro, and the Utah Transit Authority.

MRS is subcontracted for Sound Transit’s Downtown Redmond Link Extension and Federal Way Extension projects. This is in addition to TriMet’s Steel Bridge Signals and Communications Project.