An ROW crew can be on site for only a few hours and still face a complicated traffic problem. A utility truck needs a place to park. Workers need room to open a vault or excavate near the curb. Drivers need enough warning to understand a lane shift. People walking or biking need a safe way through or around the work.
These details are easy to underestimate on a short job. Yet a work zone begins before the first hole is opened, when signs and channelizing devices go out, and it continues until the last device is removed. Proper traffic control protects the crew and traveling public through that entire sequence.
The stakes extend beyond the people behind the cones. CDOT reported nine fatalities in Colorado work zone crashes in 2025. Every roadway and ROW project involves a shared responsibility to protect workers and road users alike. (CDOT, April 2026)
A traffic control plan should reflect the actual work
A traffic control plan (TCP) shows how road users will approach, pass, or move around a temporary work area. For a construction crew and project manager, it should also be a usable picture of what the day will look like on the ground.
Consider a fiber crew installing conduit along a Front Range street. The work may involve a drill, a vacuum truck, a support vehicle, a bore pit, and material deliveries at different times. A drawing that considers only the initial excavation can leave the team improvising when a truck arrives or the work moves down the block.
Before work starts, the contractor and traffic control provider should confirm the work limits, vehicle positions, access points, expected sequence, and whether the setup must change as the crew advances. The TCP should then be reviewed against the permit and the conditions at the site.
Four ways a well-run work zone protects people
1. Drivers get clear, timely direction
Advance warning signs give approaching drivers time to recognize a changed road condition. A consistent transition and properly placed cones, drums, or other devices guide them past the work area. Devices also need attention during the shift: a knocked-over cone or blocked sign can change what an approaching driver sees.
The appropriate layout depends on the road, speed, visibility, duration, and approved plan. A neighborhood shoulder job and a multilane arterial closure should not be treated as the same setup.
2. The crew has a defined work area
Traffic control establishes where public traffic travels and where the crew can work. The layout needs to leave room for the tasks actually being performed, including opening truck doors, handling materials, and operating equipment. Workers should know where to enter and exit the work area and who to notify if the setup no longer matches the work.
Cones help guide traffic, but they are not physical barriers. Where exposure calls for additional protection, that question belongs in the project-specific planning and approval process. The FHWA’s temporary traffic control guidance treats road user and worker safety as priorities from planning through construction.
3. Pedestrians and cyclists have a route they can follow
A sidewalk or bike lane closure can shift people toward moving vehicles or the equipment area if it is handled as an afterthought. Planning should identify the affected route, accessible passage, crossing points, nearby driveways, and how people will recognize the detour. The federal MUTCD addresses continuity for motor vehicle, bicycle, pedestrian, and accessible travel through temporary traffic control zones. (FHWA, MUTCD Part 6)
On a busy urban block, a clear pedestrian route can be as important to the crew’s safety as the vehicle taper: it reduces unexpected crossings through the work space.
4. Equipment movements are controlled inside the closure
Public traffic is only one source of risk. Vacuum trucks, dump trucks, trailers, and construction equipment also move within the work zone. OSHA describes an internal traffic control plan as a way to coordinate vehicles, equipment, and workers on foot so their paths are less likely to cross. (OSHA, Preventing Backovers)
For a small utility job, that can start with simple decisions: designate a delivery location, limit unnecessary backing, identify a spotter when needed, and tell the crew how vehicles will enter and leave. The external TCP and the crew’s internal movement plan should make sense together.
A practical pre-shift check for contractors
Before crews begin work near traffic, confirm:
- Required safety equipment is on-hand. Does the crew have the required signs, cones, and other safety equipment (e.g., arrow board) available to establish the work safety zone?
- The work scope matches the plan. Are the actual work limits, equipment, and closure hours the ones covered by the approved TCP and permit?
- The setup is complete. Are signs visible, devices in position, and the transition clear to an approaching road user?
- Everyone knows the sequence. Who establishes the closure, who checks it, when can construction begin, and who authorizes a change?
- People can still get through. What happens to sidewalks, bike facilities, driveways, intersections, and nearby businesses?
- The crew can move safely. Where will deliveries stop, where will equipment turn or back, and where will workers stand?
- Conditions will be monitored. Who will respond if a device moves, traffic backs up, visibility worsens, or the crew moves beyond the original work area?
If the job changes, pause and coordinate the adjustment with the responsible traffic control lead and the roadway authority as required. A setup should not drift away from its approved plan simply because the work is moving quickly.
Colorado requirements matter at the planning stage
Colorado adopted the 11th edition of the MUTCD with a Colorado Supplement, effective January 18, 2026, for new transportation projects, designs, and maintenance operations. CDOT also publishes traffic control standard plans. Requirements for a specific job depend on the roadway authority, permit, contract, and approved TCP, so the team should confirm those details before mobilization. (CDOT, Traffic Safety & Engineering Services; CDOT, Safety Standards)
On CDOT construction projects, CDOT assigns the Traffic Control Supervisor responsibility for designing, setting up, and maintaining temporary traffic control and specifies training and certification requirements for applicable roles. Municipal and county projects may have their own review and permit processes. (CDOT, Traffic Control Supervisor Program)
Build the work zone around the work
Good traffic control starts with a realistic understanding of what the construction crew will do, where each vehicle will go, and how the public will move past the site. It takes coordination before mobilization and attention as conditions change. That effort gives crews a clearer place to work and gives everyone else a clearer path through the project.
Planning a utility, telecom, or civil construction project in the Denver area? Ikon Traffic Service can help develop the traffic control plan and coordinate the field setup for the work you actually need to perform. Contact Ikon Traffic Service early in the project to discuss the location, schedule, and permit requirements.