Road Work Ahead Sign - X4578, Roll-up Signs by

Road Work Ahead Sign

MUTCD W20-1. Includes velcro strips for overlays
Road Work Ahead Sign
Item #:
Roll-Up Sign Reads:
Road Work Ahead
Roll-Up Sign Design:
The roll-up versions of this sign is provided with velcro strips around the word AHEAD to accomodate different overlay messages. Overlay size to be 22 x 7″.
  • NCHRP 350 Approved
  • Flag Trees
  • MUTCD TTC Signs
Other configurations of this product
These lightweight signs are provided with a fiberglass crossbrace (1/4" thick vertical and 3/16" thick horizontal ribs), 4-heavy duty polycarbonate pockets, plus hook and loop for easy storage.
Learn More Size:  
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Pricing See Complete Pricing Tables X4578-O36SB
Price Each:
Need a quote for a large order? Call 800-274-6271 or .
Total Price: $104.99
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99% on-time shipping. Call 800-274-6271 for large orders or expedited shipping. Orders ship when all your items are ready. Shipping options and delivery dates available at checkout.
Special freight arrangements are necessary. Learn more
Let motorists know they should be alert as they come across road work, construction, or men at work. This orange Road Work Ahead sign is available in reflective and non-reflective versions, and as roll-up vinyl or aluminum materials. This Road Work Ahead Temporary Traffic Control Sign is MUTCD TTC and MUTCD W20-1 compliant and includes velcro strips for overlays.
Road Work Ahead
36″ Diamond
Material Sku Quantity/Price
Non–Reflective Roll-Up Vinyl X4578-O36NR $51.95
Fluorescent Orange Super Bright™ Reflective Roll-Up Vinyl X4578-O36SB $104.99
36″ Diamond with Flags
Material Sku Quantity/Price
Non–Reflective Roll-Up Vinyl X4578-O36NRF $69.65
Fluorescent Orange Super Bright™ Reflective Roll-Up Vinyl X4578-O36SBF $122.75
Special Freight Arrangement: Due to the size of this product, freight shipping will be required. You may contact our customer service team for a quote or you can place your order and a customer service representative will contact you about freight shipping charges. If you would like to use your own freight carrier, please include your freight carrier account in the special instructions box at the bottom of the checkout page before placing your order. A customer service representative will be in contact with you if there are any questions.

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Material Specifications:
Outdoor Durability:
Service Temp Range:
Max Recommended
Viewing Distance*
Up To
Please see Size Tab below for more details.
* Under favorable viewing conditions.
  • Details
  • Compliance
  • Size
  • Material
  • Reviews


Roll-up signs material grades

  • Fluorescent Non-Reflective Solid Vinyl signs are recommended for day time use only, this material is not MUTCD compliant when used at night.
  • Fluorescent Super Bright Reflective Vinyl signs are MUTCD compliant when used day or night.

Roll-Up Sign Bracket Compatibility

Roll-Up Sign Features

  • Unit Weight, without flags: 4 lb
  • Unit Weight, with flags: 5 lb
  • Storage Size: 4" x 4" x 50"

Roll-Up Sign with Flag Assembly

Our folding flag system allows permanent attachment of two 18" fluorescent orange vinyl flags. Flags roll up with the sign for easy storage and fast deployment. Sliding clips quickly lock flags in their open position.

Roll-Up Sign Plastic Corner Pockets

At 3/4" deep, the Delta Rib Pocket is designed to be easier to deploy than conventional pockets. Made of tough polycarbonate, it features increased strength and the smallest storage diameter in the industry.

Featuring a full depth design, rectangular pockets are typically used at the top and bottom of the sign. Made of tough polycarbonate, they will fit all pocket style sign holders.

Overlay Option

Several of the roll-up signs on this website will have velcro added to specific words that allows for multiple messages to be displayed using a single roll-up sign. Overlays are made from the same material as the sign and come with velcro strips on the back.

Double-Spring Stand


Rigid signs material grades

  • .080" Fluorescent Diamond Grade Work Zone Reflective Aluminum signs are MUTCD compliant when used day or night.

Rigid Sign Bracket / Stand Compatibility

Rigid Sign Features

  • Sign Weight: 11 lb
  • Mounting holes: 2 holes at 3/8" dia., positioned top and bottom
Rigid Aluminum Sign

When to Use 36″ and 48″ Temporary Warning Signs

According to the MUTCD:

Type of Roadway Sign Size
Conventional Road 36 × 36″
Freeway or Expressway 48 × 48″

Transportation engineers may find this answer acceptable since they have a deeper understanding of the MUTCD than most, but not everyone has this knowledge. Luckily, definitions of these terms are provided to help make some sense of what they are trying to convey. Here’s how the MUTCD defines each of those types of roadways:

  • "Conventional Road" is a "street or highway other than a low-volume road, expressway, or freeway."
  • "Low-Volume Road" is a facility lying outside of developed areas of cities, towns, and communities, which serves fewer than 400 vehicles per day on average. A low-volume road shall not be a freeway, an expressway, an interchange ramp, a freeway service road, a road on a designated State highway system, or a residential street in a neighborhood.
  • "Expressway" is a divided highway with partial control of access.
  • "Freeway" is a divided highway with full control of access.

Still confused? It's not just you. Generally speaking, if the road is a divided highway with a concrete barrier or median, a 48 × 48″ sign will be required. A 36 × 36″ sign can be used on all other types of roadways.

Size Width Height Average
Text Size
Max Viewing
Available Materials Diagram
36″ Diamond 36″ 36″ 5″ Up to 125′
  • Non–Reflective Roll-Up Vinyl
  • Fluorescent Orange Super Bright™ Reflective Roll-Up Vinyl
36″ Diamond with Flags 36″ 36″ 5″ Up to 125′
  • Non–Reflective Roll-Up Vinyl
  • Fluorescent Orange Super Bright™ Reflective Roll-Up Vinyl
The viewing distances listed in this chart reflect the viewing distance for each of the sizes. The Manual of Uniform Traffic Control Devices (MUTCD) does not provide specifics regarding the use of certain text heights at certain distances in order to improve legibility. Instead, the MUTCD has already determined all of the necessary text sizes and merely provides the specifications for various sizes of signs, which in turn all have specific use cases that must be followed in order to help keep drivers safe and aware of important regulations.
It is the responsibility of the end user to follow the guidelines and requirements of the Manual of Uniform Traffic Control Devices (MUTCD) in order to provide road users with signs that ensure optimal legibility.
Material Outdoor Durability Available
Non-Reflective Roll-Up Vinyl This material is constructed of a fabric reinforced pliable UV stable vinyl that allows the sign to be rolled up and stored when not in use, without adversely affecting the performance of the material. This material is intended for daytime use only and should not be used during night operations or in low light conditions. Up to 3 Years
  • 36″ Diamond
  • 36″ Diamond with Flags
Roll up Vinyl
Orange Super Bright™ Reflective Roll-Up Vinyl This material is made from a vinyl coated, fabric reinforced pliable microprismatic reflective sheeting that allows the sign to be rolled up and stored when not in use, without adversely affecting the performance of the reflective material. This meets the ASTM D4956 specifications for Type VI, Class 5 retroreflective sheeting. Up to 3 Years
  • 36″ Diamond
  • 36″ Diamond with Flags
Engineering Grade
High Intensity Prismatic
Diamond Grade
  NoneEngineering GradeHigh Intensity PrismaticDiamond Grade
ATSM D956 Type Type I Type IV Type IX
Brightness Standard High Maximum
Night-Time Visibility 500' 1,000' 1,500'

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