Installing String Line and Temporary raised pavement markers

Working Around Ground Workers
June 2, 2017
Truck Operation for Loading, Weighing and Delivery of Aggregate
June 2, 2017

Job Description

This guideline describes the process for installing String Line and temporary raised pavement markers (TRPM’s) to centerline.

Hazard Identification

Personal Injury

  • Crushing, bruises, bumps, scrapes, muscle pull/strain, heat exhaustion, pinch points, cuts, slip, trip and fall.


  • Equipment accidents/incidents, struck-by.


  • Visibility, weather, dust, flying debris.



  1. Pre-Job Planning
    1.1 Ensure that workers are properly trained and competently supervised.
    1.2 Identify any special hazards and controls.
    1.3 Review all Traffic Accommodation Plans, Traffic Control Plans and Emergency Plans.
    1.4 Ensure that you have sufficient resources (labour, personal protective equipment (PPE), equipment and materials) to carry out the task safely.
  2. Operating Practices
    2.1 Put on PPE, ensure that traffic accommodation signs are up. Make sure all warning lights and arrow boards are activated and operating properly.
    2.2 There should be a minimum of two people to do this job: one to place the string or TRPM and a second person (observer) to watch and ensure that both are safe from traffic. The observer should have a Stop/Slow sign paddle on a pole to help slow the traffic.
    2.3 Attach the string to the last nail at centerline or if you are applying TRPM’s then walk to the next location approximately 25 to 30 meters apart and attach string or place TRPM. Keep doing this until you have gone the distance you were instructed to do. Be aware of traffic and your surroundings.
    2.4 If there is no other work in the area, make sure to take down or cover all traffic accommodation signs when the job is completed.


Personal Protective Equipment

  • As required by Contractor Safety Policy.


Tools / Equipment

  • As required by Contractor Safety Policy.


Related Safe Operating Guidelines