Controller of Site Safety (COSS)

This course is for those who will carry out the duties of a Controller of Site Safety (COSS), set up Safe Systems of Work for a group whilst on or near the line.

Learning Objectives

At the end of this course delegates will be able to:

  • Know the roles and responsibilities of a COSS.
  • Be able to check the competencies via Sentinel.
  • Demonstrate a good COSS briefing.
  • Access information about the site.
  • Demonstrate the Safe System of Work planning process.
  • Correctly appoint Lookouts/Site Wardens.
  • Demonstrate use of the sighting distance chart and how this can be attained.
  • Understand and demonstrate a good level of both written and verbal communications.
  • Demonstrate the ability to take and hand back line blockages.
  • State the process when working within a possession.
  • Understand and state the process for working in a sidings.
  • How to manage an incident and the role of the RIO.
  • Understand the LCV process

What do you need to attend this course?

  • Must hold the required medical level.
  • PTS must be held and is renewed as part of the course so the minimum log book requirement must be met.
  • Have a good level of literacy.


6 days (OLP/CRP is an additional day)

What happens after I pass the course?

Your track safety card will be updated to include both the PTS recertification and (Probationary) COSS. You must complete the mentoring requirements and pass a workplace assessment within 4 months. You must be accompanied at all times by a full COSS holder until this is completed. An interim assessment (between 9 and 15 months after the post mentoring assessment) must also be completed.

Request a course

There are no scheduled sessions available for this training course, but we often arrange courses on request. Please call us on 01925 813897 or complete our Course Request form.


  • All our training includes lunch.
  • All equipment is provided, no need for laptops
  • Free tea, coffee and refreshments supplied
  • Free WIFI available for all delegates
  • Multi Faith prayer room
  • Accessible toilet

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