Flagger Ahead Symbol Sign - Aluminum [Price for 1]
Specifications
Material and Construction
- Thickness: 0.080" (80 mil) rigid aluminum
- Federal specification: FP-85 (municipal grade)
- Corners: Rounded
- Mounting: Pre-punched installation holes included
- Crashworthiness: NCHRP 350 Approved
- MUTCD compliance: Section 6F.31, code W20-7
Available Sizes and Typical Applications
- 24": Parking lots, low-speed private work areas, and flagging operations on property not open to public traffic
- 30": Local residential streets and low-volume secondary roads
- 36": State highways and federal roadways (standard specification for most public road projects)
- 48": High-speed arterials and interstate work zones where advance warning distance demands greater sign legibility (+$56.50 FedEx oversize surcharge applies)
Reflective Sheeting Options
Standard Reflective: Meets the minimum MUTCD retroreflectivity threshold. Appropriate for low-speed roadways and daytime-only operations on private property.
Hi-Intensity Prismatic: Exceeds baseline retroreflectivity requirements. The preferred grade for nighttime construction on state and federal highways, and required by many state DOT specifications for operations on roads with speed limits above 45 mph.
Fluorescent Orange: Maximizes daytime contrast and visibility in direct sunlight. Several state DOTs mandate fluorescent orange sheeting on high-speed corridors and in areas where driver reaction distance is a documented concern.
Compliance and Regulatory Standards
This sign is manufactured to the requirements of MUTCD Section 6F.31, which governs warning signs used in temporary traffic control zones on U.S. public roadways. The W20-7 designation is the MUTCD's standard code for flagger operation warning signs.
For projects receiving federal highway funding, all temporary traffic control devices must conform to the MUTCD as published by the Federal Highway Administration. This sign satisfies that requirement across all three available sheeting grades. For state-specific addenda and retroreflectivity maintenance schedules, consult the full MUTCD Part 6 guidance at the FHWA MUTCD website.
NCHRP 350 approval means the sign and its mounting hardware have been tested and confirmed to meet crashworthiness standards required for roadside devices on federally funded projects. Contractors and municipalities required to submit Traffic Control Plans (TCPs) for permit approval can cite this sign's W20-7 code and NCHRP 350 status directly in their plan documentation.
When Do You Need a Flagger Ahead Sign?
Any temporary traffic control operation that uses a human flagger to manage one-way or alternating traffic requires a flagger ahead warning sign placed in advance of the flagger's position. The MUTCD specifies advance placement distances based on posted speed limit: 100 feet at 25 mph, extending to 500 feet at 55 mph. Selecting the correct size for the road classification and placing it at the specified distance keeps your operation MUTCD-compliant and limits liability on public contracts.
Common applications include:
- Highway and bridge construction projects
- Road resurfacing, milling, and paving operations
- Utility work in or adjacent to the roadway (gas, water, electric, fiber)
- Municipal street repair and pothole patching
- Any temporary traffic control plan that calls for flagging operations in lieu of temporary signals
Frequently Asked Questions
What does a flagger ahead sign mean?
A flagger ahead sign warns drivers that a human traffic control flagger is stationed ahead in the roadway. It tells drivers to slow down and be prepared to stop or follow the flagger's instructions. The sign is required in construction and maintenance zones where standard traffic signals are not in place.
What MUTCD code covers the flagger ahead sign?
The flagger ahead symbol sign uses MUTCD code W20-7. It is governed by Part 6 of the Manual on Uniform Traffic Control Devices, which covers temporary traffic control for work zones. W20-7 specifically identifies the symbol sign format showing a worker figure with a flag.
What size flagger ahead sign do I need?
Size is determined by posted speed limit and road classification. MUTCD Table 6H-2 provides the complete size matrix, but as a general guide: 24" is appropriate for parking lots and low-speed private areas, 30" fits most local roads, 36" is the standard for state and federal highway applications, and 48" is used on high-speed arterials and interstates.
Is retroreflective sheeting required on a flagger ahead sign?
Yes, for any sign placed on a public roadway. The MUTCD requires all temporary traffic control signs on public roads to use retroreflective sheeting that meets minimum maintained retroreflectivity levels. Standard reflective sheeting meets the baseline requirement. Hi-intensity prismatic exceeds it and is often required or preferred for projects involving nighttime operations.
What is the difference between hi-intensity prismatic and fluorescent orange sheeting?
Hi-intensity prismatic sheeting improves nighttime retroreflectivity, making the sign more legible when illuminated by headlights. Fluorescent orange sheeting improves daytime contrast against natural backgrounds in bright sunlight. Some state DOTs require fluorescent orange on high-speed corridors at any hour. Check your project's traffic control plan or state DOT standard specifications to confirm which grade applies.
Does the 48-inch flagger ahead sign require special shipping?
Yes. Because of its dimensions, the 48" sign ships via FedEx and incurs an oversize handling surcharge of $56.50, which is added at checkout. The 24", 30", and 36" sizes ship without oversize fees.
Shop Flagger Ahead Signs at Trans-Supply
Order flagger signs at Transportation Supply today. Reach out to us directly if you need immediate information on their scheduled delivery date. Flagger ahead signs ship within 48 hours of your order being confirmed.
