| Transit Bus In-Service Brake System Performance Testing | Bus Transit Systems | Brake and Chassis Working Group | This recommended practice provides guidelines for testing transit bus air brake system performance. |
| Head End Power Source Characteristics | Passenger Rail Equipment Safety Standards | Electrical Working Group | This recommended practice defines the characteristics necessary on new equipment for head end power (HEP) sources, including diesel-driven alternators, inverters and utility-supplied wayside power. The HEP source is composed of power source, switchgear, control system (incorporating trainline complete functions) and connections to vehicle HEP trainline(s). |
| 480 Vac Head End Power System | Passenger Rail Equipment Safety Standards | Electrical Working Group | This document defines the recommended practices for a head end power (HEP) system, including hardware component functional requirements, transmission, power distribution and load properties for use on locomotive-hauled passenger vehicles. Single bus and split bus forms are described to accommodate intercity and commuter-type operations. |
| 27-Point Control and Communication Trainlines for Locomotives, Locomotive-Hauled Equipment and DMUs | Passenger Rail Equipment Safety Standards | Electrical Working Group | This document defines recommended practices for 27-point MU control and communication trainlines, including functional hardware and interfaces on the vehicles with circuit functions, for use on new/rebuilt locomotives, locomotive-hauled vehicles and DMUs. |
| 480 Vac Head End Power Jumper and Receptacle Hardware | Passenger Rail Equipment Safety Standards | Electrical Working Group | This document defines the recommended practices for head end power (HEP) jumper/receptacle hardware. |
| 27-Point Jumper and Receptacle Hardware for Locomotives, Locomotive-Hauled Equipment and MUs | Passenger Rail Equipment Safety Standards | Electrical Working Group | This document defines the recommended practices for 27-point MU control and communication jumper and receptacle hardware for use on new and rebuilt locomotives, locomotive-hauled vehicles and MUs. |
| Security Lighting for Transit Passenger Facilities | Security and Emergency Management Standards | Infrastructure and System Security Working Group | This document establishes recommended practices for security lighting systems for transit passenger facilities to enhance the security of people, operations, assets and infrastructure. |
| After-Action Reviews and Corrective Actions for Real-World Events | Security and Emergency Management Standards | Security Emergency Management Working Group | This recommended practice provides information, considerations and recommendations to help public transit agencies implement after-action reviews and corrective action plans and programs to facilitate an agency’s continuous improvement, especially related to preparedness efforts. |
| Visibility of Digital Networks, Systems and Assets in Rail Transit Environments | Security and Emergency Management | Transit Cybersecurity Working Group | In modern rail transit systems, visibility is the foundation of both operational efficiency and cybersecurity resilience. This white paper explores the critical importance of visibility across assets, networks and systems in rail environments. It clarifies the scope of visibility focusing on comprehensive asset awareness, data flow transparency and interconnection mapping. This is presented while distinguishing visibility from detection, segmentation and other security practices. Through this focused lens, the paper presents best practices, standards alignment and practical guidance for rail operators striving to meet regulatory expectations and bolster system reliability. By addressing the visibility gaps inherent in complex operational technology and IT environments, this white paper empowers transit agencies to build a secure, adaptable and resilient foundation for their evolving digital ecosystems. |
