This specification was formulated for the purpose of unifying the technical requirements on the construction of high-speed railway signaling system projects， strengthening the technical management of the construction， and guaranteeing the engineering quality.
This specification is applicable to the construction of high-speed railway signaling system projects and shall be taken as reference in the construction of inter-city railway signaling system proj ects.
The construction of high-speed rail

1 General Provisions
2 Terms
3 Basic Requirements
3．1 GeneralRequirements
3．2 Client
3．3 Designlnstitute
3．4 Contractor
3．5 Supervision Firm
3．6 Operation and Maintenance Company
4 ConstructionPreparation
4．1 Constructionlnvestigation
4．2 Shop Drawings Check
4．3 Selection of Construction Scheme and Allocation of Resources
4．4 Construction Operation Guide
4．5 Construction Technical Instructions
4．6 FirstArticlelnspection
5 Optical and Electric Cable Line
5．1 General Requirements
5．2 CableRouteResurvey
5．3 Single Drum Testing，Cable Drum Allocation and Transportation of Cables
5．4 Cable Laying
5．5 Cable Protection
5．6 Cable Splicing
5．7 CableTermination
5．8 Installation of Cases and Boxes
5．9 Wiring of Cases & Boxes
6 Fixed Trackside Signal and Sign Board
6．1 GeneralRequirements
6．2 High Post Colorlight Signal
6．3 DwarfColorlight Signal
6．4 Signal Sign Board
7 Switching Equipment and Switch Snow-Melting Equipment
7．1 General Requirements
7．2 Installation Device
7．3 External Locking Device
7．4 Switch Machine
7．5 Switch Closure Detector
7．6 Locking Detector
7．7 Switch Snow Melting Device
8 Track Circuit
8．1 General Requirements
8．2 Trackside Equipment
8．3 Compensation Capacitor
8．4 Rail Insulation
8．5 Track Bonds
8．6 Choke Transformer
9 Balise and Outdoor Lineside Electronic Unit（LEU）
9．1 General Requirements
9．2 Balise
9．3 Outdoor Lineside Electronic Unit（LEU）
10 Trackside Equipment for Onboard Equipment Detection
10．1 GeneralRequirements
10．2 Testing Equipment Box and Testing Loop of Trackside Equipment for Onboard Equipment Detection
10．3 BTM Antenna Testing Equipment
11 Indoor Equipment and Equipment Container
11．1 General Requirements
11．2 Control & DisplayEquipment
11．3 Power Supply Equipment
11．4 Cabinet Equipment
11．5 Indoor Wiring
11．6 Equipment Container
11．7 Cable Lead-in
12 Lightning Protection and Earthing
12．1 General Requirements
12．2 Lightning Protection for Equipment
12．3 Earthing of Indoor Equipment
12．4 Earthing of Outdoor Signaling Equipment
12．5 Earthing of Equipment Container
12．6 Integrated Earthing System
13 Commissioning
13．1 General Requirements
13．2 Single-item Commissioning of Equipment
13．3 Commissioning of Subsystems
13．4 Commissioning of System Interfaces
14 Project Acceptance
14．1 Acceptance for Unit Works
14．2 Static Acceptance
14．3 Dynamic Acceptance
Appendix A Log Sheet for Signaling System Construction
Explanation of Wording in this Specification