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Adhesion

    Introduction

    Low adhesion between rail and wheel can be caused by moisture on the rail mixing with the film produced by 'leaves on the line' or other contaminants, such as rust or grease. It can be particularly severe in autumn, but low adhesion can occur at any time of year, resulting in disruptions to passenger journeys. It can also cause safety risks, such as signals passed at danger and station overruns.  

    Adhesion Leaf Costs

    Low adhesion is also a barrier to increasing capacity. Being able to stop trains reliably and predictably under a variety of adhesion conditions is essential to the safe running of a busy and reliable railway.  
     
    In response to this adhesion challenge, we have worked alongside industry to develop a wide-ranging ADHEsion REsearch (ADHERE) programme.  

     

    Highlights

    Recent implementation has included piloting double variable rate sanders and moisture sensors on the Birmingham Cross-City Line. Wider industry trials planned for autumn 2020 include high-speed cryogenic railhead cleaning and microwave generated plasma track treatment

     

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    Adhesion topics

    Changes to Train Design
    Driver Behaviours
    Forecasting
    Railhead Cleaning
    Fundamental Science and Modelling
    Haven’t found what you’re looking for?
    Get in touch with our expert for more information
    Paul Gray
    Tel: 020 3142 5602
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