| Applicable Standards and Regulatory Compliance | The supplier should identify all applicable Chinese railway, level-crossing, electrical safety, EMC, environmental and construction requirements for the intended line and crossing type. International projects should also map requirements to the applicable EN, IEC or national standards. | Standards compliance matrix, current technical specifications, type-test reports, conformity declarations and a list of deviations or exclusions. Relevant frameworks may include applicable GB/T and TB standards, EN 50126, EN 50128, EN 50129, EN 50121-4 and IEC 60529. | 15% | Critical |
| Functional Safety and Safety Integrity | The safety integrity target must be defined by the infrastructure manager and hazard analysis. For safety-related electronic railway systems, the supplier should demonstrate a lifecycle and safety case appropriate to the required SIL; SIL 4 is used for some highly safety-critical railway functions, but it must not be assumed without a project-specific assessment. | Hazard log, preliminary hazard analysis, FMEA or FTA, safety plan, safety case, independent assessment report and traceability from safety requirements to verification results. EN 50126, EN 50129 and IEC 62425 are commonly used references for railway safety assurance. | 18% | Critical |
| Interlocking and Signalling Interface | The equipment should provide clearly defined interfaces with interlocking, train detection, road traffic equipment, control centres, power systems and maintenance terminals. Fail-safe states and loss-of-communication behaviour must be specified. | Interface control document, circuit diagrams, communication protocol description, I/O list, fail-safe logic description, FAT procedure and interoperability test records. | 12% | Critical |
| Train Detection and Warning Logic | The solution should support the required train-detection technology and provide deterministic activation, warning, crossing-clearance and reset logic. The design should address multiple tracks, bidirectional operation, shunting movements and degraded operating modes where applicable. | Functional description, timing diagrams, track layout assumptions, detection coverage calculation, false-activation analysis and test results for normal and degraded conditions. | 12% | Critical |
| Availability, Reliability and Maintainability | The supplier should provide RAM targets and calculation methods for the complete crossing system, including control units, detection equipment, warning devices, barriers, power supplies and communications. Targets must be stated for the actual configuration rather than for an isolated module only. | RAM plan, MTBF or failure-rate assumptions, MTTR estimate, reliability block diagram, preventive-maintenance schedule, spare-parts strategy and field failure statistics presented in an auditable format. EN 50126 provides a lifecycle framework for railway RAMS activities. | 12% | High |
| Environmental and Mechanical Performance | Equipment ratings should match the project location, including temperature, humidity, rain, dust, vibration, shock, corrosion, solar exposure, altitude and outdoor installation conditions. Enclosures should have an ingress-protection rating suitable for their installation position. | Environmental qualification reports, vibration and shock test records, temperature and humidity test records, corrosion assessment, enclosure rating certificate and component derating calculations. IEC 60529 is used for IP-code classification; IEC 60068 series methods are commonly used for environmental testing. | 10% | High |
| Electromagnetic Compatibility and Electrical Protection | The system should be tested for conducted and radiated emissions, immunity, electrostatic discharge, electrical fast transients, surges and power disturbances under the applicable railway environment. | EMC test reports from a competent laboratory, grounding and bonding design, surge-protection scheme, lightning-protection interface, electromagnetic compatibility plan and power-quality limits. EN 50121-4 is a commonly referenced EMC standard for railway signalling and telecommunications apparatus. | 8% | High |
| Quality Management and Production Control | The supplier should operate a documented quality-management system with controlled design changes, incoming inspection, process inspection, final testing, nonconformance management and product traceability. | Valid ISO 9001 certificate, railway-sector quality certification where applicable, process audit results, inspection and test plans, calibration records, nonconformance statistics and change-control procedure. ISO 22163:2023 is the railway-sector quality-management standard based on ISO 9001 principles. | 8% | High |
| Verification, Validation and Factory Acceptance Testing | Requirements should be traceable through design, verification, validation, integration testing and site acceptance. FAT should reproduce representative operating, fault and recovery scenarios before shipment. | Requirements traceability matrix, validation plan, test specifications, test coverage report, FAT checklist, calibration certificates and signed test records with serial-number traceability. | 8% | High |
| Cybersecurity and Configuration Control | Connected crossing equipment should have defined security zones, controlled access, secure maintenance procedures, account management, backup and recovery controls, vulnerability handling and a documented software-update process. | Cybersecurity risk assessment, asset inventory, access-control policy, secure-development procedure, vulnerability-management process, software bill of materials where available and configuration-baseline records. IEC 62443 principles may be used for industrial cybersecurity assessment; project-specific railway cybersecurity requirements should also be applied. | 5% | Medium to High |
| Installation, Commissioning and Local Support | The supplier should provide installation drawings, commissioning procedures, training, troubleshooting guidance and defined response arrangements for the project location. Local support capability should be verified rather than accepted solely on a written statement. | Installation manual, commissioning checklist, training plan, service organization chart, escalation process, response-time commitments, reference project contacts and records of completed commissioning activities. | 5% | Medium to High |
| Lifecycle Documentation and Spare-Parts Support | The supplier should commit to controlled technical documentation, software and firmware version management, spare-parts availability, repair procedures and obsolescence management for the contractual support period. | Document index, as-built drawings, maintenance manuals, parts list, recommended initial spares, firmware release notes, obsolescence policy, repair turnaround target and warranty terms. | 5% | Medium |
| Commercial Transparency and Total Cost of Ownership | Evaluation should include purchase price, engineering, testing, installation, training, spare parts, energy use, maintenance, software licensing, warranty extensions and end-of-life costs. The lowest initial price should not automatically receive the highest score. | Itemized quotation, five- to ten-year lifecycle-cost model, warranty conditions, exclusions, payment milestones, delivery schedule, spare-parts pricing and a clear list of customer-supplied interfaces. | 5% | Medium |
