The Controller of Site Safety Course (COSS) course enables current PTS cardholders to set up a safe system of work, protecting a workgroup whilst on or near the line anywhere on the Network Rail Managed Infrastructure. The COSS course includes an Overhead Line and Conductor Rail Permit module OLP/CRP.

Duration: 6 Days

More Info:

The Controller of Site Safety Course (COSS) course enables current PTS cardholders to set up a safe system of work, protecting a workgroup whilst on or near the line. The COSS course includes an Overhead Line and Conductor Rail Permit module OLP/CRP.

The first step towards achieving your COSS qualification is to gain experience and knowledge of working on the Railway as a PTS cardholder. You can attend the COSS course on your chosen date when you are ready to progress. Prior to attending you need to complete a pre-course workbook arranged by your Employer/Sponsor.

Your Railway Medical needs to be in date with a current Drug and Alcohol test. If you change Employer/Sponsor you will need to take a new Drug and Alcohol test, contacts us to book an appointment prior to attending your course or book online.

For pre-course reading download the COSS Rule Book Modules and Keypoint card free from our site.

What You Learn on your COSS Course:

The COSS course consists of theory and practical elements including:

  • PTS Recertification
  • Roles & Responsibilities
  • Emergency Procedures
  • AC/DC Electrical systems
  • Signalling systems
  • Positioning Lookouts
  • Line Blockages
  • Safety Critical Communications
  • SWP Verification
  • Working in Possessions
  • OLP/CRP Permits

On successful completion of the COSS course, you are free to perform the duties of a COSS anywhere on the Network Rail Managed Infrastructure including Infrastructure Projects.

How to Pass your COSS Course:

Throughout the COSS course, there are a series of verbal, written and practical assessments. We can provide additional learning support if required. The pass rate at the centre for the COSS course is 98% and if you don't pass the first time you can attend another course free of charge!

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The COSS qualification lasts for two years, within 4 months you must complete a minimum of 4 shifts during the mentoring period. Provided your mentor has signed your work experience logbook, you're eligible for a post mentoring on-site COSS assessment. To maintain your COSS competency an additional interim assessment must be carried out between 9-15 months from the date of your course.  You will need to attend the COSS Refresher Course leading up to expiry.

How to book your Controller of Site Safety course

You can book online for your Controller of Site Safety course...

...or contact us directly for group bookings;
Call us on 020 8596 5121 if you need help, advice or wish to book over the phone.


Max number of people per COSS Course: 8

What to Bring:

  • Safety Boots
  • Passport or Driving License
  • A Positive Attitude

Items of Personal Protective Equipment (PPE) if needed can be purchased from our online shop or at the centre upon arrival.


PTS cardholders including COSS's range from all types of construction workers including trackworkers, tradespeople, Scaffolders, Engineers and Surveyors. The Railway has an excellent safety record with a focus on training so you can progress and take higher-level courses. The natural progression from COSS is to attend the Safe Work Leader conversion course (SWL 1).

Many people take a temporary job on the Railway but end up staying within the rail industry for the rest of their career. For the next 10 years, the government has released a huge amount of money to maintain and enhance the rail network. The first phase of the High Speed 2 project has created an additional 16,000 Railway jobs.

Why Fast Line Training?

Fast Line Training Services is the right choice, we are totally driven by your success, supporting you every step of the way towards gaining your qualification. The people who choose us enjoy their learning experience, you might be an individual seeking personal progression and development or a multi-national organisation. We have the expertise, resources and flexibility to deliver a complete professional service.

We pride ourselves on our learners' success, our metrics for success are based on the achievement of the people and companies we work with. We demonstrate this by offering all individuals and businesses a money-back guarantee. "NO PASS- NO PAY". It has taken 10 years to develop an association of quality training providers that share our values, only the very best trainers, advisors, mentors and industry experts get the opportunity to work with us.

Related Downloads

COSS Rulebook HandBooks, COSS Keypoint card, COSS competency flow chart, Sentinel APP, Track Locator APP

Related Courses:

  • Railway Medical – Drug & Alcohol Test
  • COSS Post-Mentoring Assessment
  • Small Tools Ticket