Working next to traffic is one of the most dangerous situations for crews. Here is how to set it up right.
In this article
Why work zones are dangerous
Crews working near traffic face distracted and speeding drivers. A poorly set up work zone confuses drivers and puts workers at risk. A proper setup protects the crew and the public.
Traffic control plan
Before work starts, define signs, lane closures, taper lengths and flagger positions. Many cities require the plan for permits.
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Follow the MUTCD
The Manual on Uniform Traffic Control Devices sets national standards for signs, cones and layouts. States may add rules.
Advance warning
Drivers need warning well before the work area. Place signs at the right distances for the speed of the road.
Channelizing devices
Cones, drums and barricades guide traffic smoothly. Spacing matters.
Flaggers
Trained and certified flaggers, in high-visibility clothing, with clear signals and an escape route.
Night work
Night work needs lighting, reflective gear and extra devices.
Inspect the setup
Check the zone at the start of each shift and after storms or traffic changes.
Permits
Right-of-way and lane closure permits are often required. Plan time for approval.
Toolbox talk
"Stay inside the cones, never turn your back to traffic and know where your escape path is."
Common mistakes
Signs too close to the work, missing tapers and untrained workers acting as flaggers.
Where to start
Use a standard traffic control layout for your most common jobs and train two or three certified flaggers on your team.
Know your numbers
Track near misses with traffic, setup time per shift and inspection findings. Near misses near traffic are warnings that the setup or the training needs to change before someone gets hurt.
Run tighter jobs and win the right ones.
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Frequently asked questions
What standard governs work zone traffic control in the US?
The Manual on Uniform Traffic Control Devices (MUTCD) sets the national standards, and states and cities often add their own requirements and permits.