What is a traffic control plan?

A traffic control plan describes how road users and workers will be separated and guided around a work area — the layout, signs, devices, vehicles and personnel used, and how the setup changes as the work progresses.

Does municipal public works need a traffic control plan for short-duration work?

Short-duration and mobile work still requires appropriate traffic control; what changes is the form it takes, not whether it is needed. Follow the current Ontario Traffic Manual guidance for temporary conditions, applicable occupational health and safety requirements and your municipality's own standards.

Why photograph a work zone?

Because the setup is temporary and the questions come later. A photograph taken from the driver's approach records what road users actually saw, which no written description reproduces.

Public works resource

Traffic Control Planning for Municipal Public Works

How do municipal public works crews plan traffic control for roadside work?

In short

Traffic control planning is the process of deciding, before work begins, how road users and workers will be separated and guided around a work area — the layout, devices, signs, vehicles and personnel required — and documenting what was actually set up. In Ontario, temporary conditions on roadways are addressed by the Ontario Traffic Manual and by occupational health and safety requirements, and municipalities also apply their own standards and procedures.

Where the requirements come from

Three sources typically apply at once, and none of them replaces the others: Ontario's occupational health and safety legislation and its regulations, the Ontario Traffic Manual guidance for temporary conditions used across the province, and the municipality's own traffic-control policies and standard layouts.

This page does not reproduce layout drawings, taper lengths, device spacing or sign selection. Those belong in the current edition of the applicable manual and your municipal standard, and using a second-hand version of them is exactly the kind of shortcut that produces an unsafe work zone. Obtain the current Ontario Traffic Manual guidance from the Ministry of Transportation and follow your municipality's own procedures.

Stationary versus mobile operations

The two behave differently and get planned differently. A stationary operation — a catch basin repair, a watermain excavation, a sign installation — has a fixed footprint that can be laid out, inspected and photographed. A mobile operation — line painting, sweeping, mowing, patching in a moving convoy, winter treatment — moves continuously and depends on vehicle-mounted protection and consistent operator behaviour.

	Stationary work	Mobile work
Footprint	Fixed, can be laid out in advance	Continuously moving
Main risk	Encroachment into the work space	Overtaking traffic and rear-end exposure
Key controls	Signs, devices, buffer space, positive protection	Vehicle position, lighting, escort or shadow vehicle, speed differential
Documentation	Layout, devices, photos, inspection times	Route, times, vehicles, operators, conditions

Pre-job planning questions

What is the road classification, posted speed and typical volume at the time of day planned?
What is the sightline situation — crests, curves, obstructions, sun angle?
Are there pedestrians, cyclists, transit stops, school access or accessibility considerations?
How long will the work take, and does it cross a peak period?
Is a lane closure, full closure or detour required, and who must approve it?
What devices, signs and vehicles are needed, and are they on the truck before departure?
Who on the crew is trained for the traffic-control role required?
What is the plan if conditions change — weather, darkness, an incident nearby?
Do emergency services, transit or the school board need notice?

Roadside work with recurring traffic-control needs

Certain municipal operations recur constantly and are the ones most often set up from habit: pothole patching, shoulder grading, sweeping, mowing, ditching, catch basin cleaning, sign replacement, culvert work and line painting. Habit is efficient and it is also how a crew ends up working a curve the same way they worked a straight tangent last week.

The practical control is a short, job-specific confirmation at the location — which is precisely what a tailboard talk is for.

Documenting a work zone

The location and the layout used, referenced to the municipal standard or manual layout applied.
Time set up, time removed, and any change made in between.
Devices and vehicles used, and who performed the traffic-control role.
Photographs of the completed setup, taken from the approach a driver sees.
Inspections during the work, especially after any interruption.
Incidents, near misses and any encroachment by a road user.

Closures and detours

A closure creates obligations beyond the work zone itself: approval, notification, signed detour routes, emergency-services access and, often, a by-law or permit. Keeping the closure record attached to the work order it belongs to is what lets a department answer, later, exactly what was closed and when it reopened.

Checklist

Roadside work pre-job traffic-control checklist

Use it as written or adapt it to your own municipal policy. It is a practical aid, not a compliance guarantee.

Work location, road classification and posted speed confirmed.
Applicable municipal standard or manual layout identified before departure.
Signs, devices and vehicles loaded and in serviceable condition.
Crew member assigned to the traffic-control role is trained for it.
Sightlines and approach conditions assessed on arrival.
Pedestrian, cyclist, transit and accessibility needs addressed.
Any required closure or detour approved and notified.
Setup photographed from the driver approach.
Setup re-inspected after breaks and any interruption.
Devices fully removed at completion and recorded as removed.

Common mistakes

Reusing yesterday's setup on a road with different geometry or speed.
Planning traffic control after arriving on site rather than before leaving the yard.
No photograph of the setup, leaving no record of what a driver actually saw.
Leaving devices out after the work is finished.
Treating mobile operations as needing no plan because nothing is stationary.

Frequently asked questions

What is a traffic control plan?: A traffic control plan describes how road users and workers will be separated and guided around a work area — the layout, signs, devices, vehicles and personnel used, and how the setup changes as the work progresses.
Does municipal public works need a traffic control plan for short-duration work?: Short-duration and mobile work still requires appropriate traffic control; what changes is the form it takes, not whether it is needed. Follow the current Ontario Traffic Manual guidance for temporary conditions, applicable occupational health and safety requirements and your municipality's own standards.
Why photograph a work zone?: Because the setup is temporary and the questions come later. A photograph taken from the driver's approach records what road users actually saw, which no written description reproduces.

References and sources

This page is operational guidance for public-works staff. It is not legal advice. Where a regulation is discussed, work from the current consolidated text and your municipality's own policies and legal advice.

Ontario Traffic Manual, Book 7 — Temporary Conditions (Ministry of Transportation of Ontario)
Obtain the current edition from MTO. Editions are revised; do not rely on second-hand excerpts.
Occupational Health and Safety Act, R.S.O. 1990, c. O.1 and its regulations
O. Reg. 213/91: Construction Projects
Applies where the work constitutes a construction project; consult your own health and safety advisors on its application to municipal operations.

Last reviewed against its sources: 2026-08-16. Regulatory material changes; confirm current text before relying on it operationally.