MUTCD stands for the Manual on Uniform Traffic Control Devices. It is a national standard issued by the Federal Highway Administration (FHWA) under the U.S. Department of Transportation.
The MUTCD governs how traffic control devices—including traffic cones, signs, and signals—are designed, installed, and maintained on U.S. public roadways to ensure safety, consistency, and legal compliance.
MUTCD Compliance for Traffic Cones
A MUTCD-compliant traffic cone meets federal requirements related to:
- Color
- Height
- Reflectivity
- Usage conditions (daytime vs. nighttime, low-speed vs. high-speed roads)
These standards are followed nationwide and are commonly required by DOTs, contractors, and municipalities.
Key MUTCD Requirements for Traffic Cones
1. Color
- Cones must be predominantly fluorescent orange
2. Height Requirements
-
Minimum 18 inches
- Allowed for daytime use
- Limited to low-speed roadways (≤ 40 mph)
- Reflective bands not required
-
28 to 36 inches
- Required for high-speed roadways, freeways, or nighttime use
- Most common size in work zones: 28 inches
3. Reflective Collars (Nighttime / High-Speed Use)
For cones 28–36 inches tall, MUTCD requires two white reflective bands:
-
Top band:
- 6 inches tall
- Positioned 3–4 inches from the top
-
Bottom band:
- 4 inches tall
- Located approximately 2 inches below the top band
These bands ensure visibility during nighttime and high-speed traffic conditions (≥ 45 mph).
MUTCD Section Reference
Section 6F.64 — Cones
Standard Requirements
- Be predominantly orange
- Be made of material that will not damage vehicles when struck
- At least 18 inches tall for daytime / low-speed roads
- At least 28 inches tall for nighttime or high-speed highways
Nighttime use: Cones must be retroreflectorized or equipped with lighting.
Optional Uses
- Channelize traffic
- Separate opposing traffic lanes
- Divide lanes traveling in the same direction
- Delineate short-duration maintenance or utility work
Stability & Safety Guidance
- Prevent cones from being blown over by wind
- Prevent displacement by passing vehicles
Stability options include:
- Doubling cones
- Weighted bases
- Ballast-filled bases
- Sandbag or rubber weight rings