What is BS EN 13145 - wood sleepers and bearers on tracks about?  
BS EN 13145 is a European Standard that discusses railway track applications.
BS EN 13145 defines wood species, quality requirements, origin, manufacturing conditions, forms, dimensions, and tolerances as well as the durability and preservation of wood sleepers and bearers for use on railway tracks.
Note 1: BS EN 13145 does not cover specific finishing processes that may be required by the customer.
Note 2: BS EN 13145 does not apply to other track timbers.
Who is BS EN 13145 - wood sleepers and bearers on tracks for? 
BS EN 13145 on wood sleepers and bearers on tracks is useful for: 
- The timber industry
- Manufacturers and suppliers of wood sleepers and bearers
- Railway management authorities 
- Train operator companies (TOCs)
- Infrastructure managers 
- Maintenance engineers and crew
- Inspection and testing department in railways
- Quality control personnel
- Safety and compliance bodies
- Contractors
Why should you use BS EN 13145 - wood sleepers and bearers on tracks?  
Railway sleepers are laid horizontally underneath tracks to hold rail lines in place at the correct gauge. Wooden sleepers are also comparatively cheap, as well as light and easy to transport, install and maintain.
BS EN 13145 provides necessary preservative treatments so that the sleepers and bearers are free from features that prevent a proper application of preservatives and thus impair the function of the preservative-treated sleepers and bearers in service. 
BS EN 13145 is useful to support running rails, check rails, and where appropriate conduct rails, crossings, and operating mechanisms in switches and crossings.
Through BS EN 13145, you will be able to improve the safety and reliability of the wood sleepers and bearers, which could mitigate risks of accidents and positively impact the life cycle cost of the rail.  
