Understanding Traffic Taper Requirements (MUTCD 11th Edition)
In the world of professional traffic control, the “Taper” is the most critical element of your work zone safety plan. A taper is the gradual transition that redirects traffic from its normal path into a new lane. At Eastern Metal Signs and Safety, we ensure your team has the knowledge and equipment to meet MUTCD standards.
The Science of the Taper: Formulas for Success
Taper length (L) is determined by Speed (S) and Width (W).
1. Low-Speed Roads (< 45 MPH)
L =
60
2. High-Speed Roads (≥ 45 MPH)
12 × 55 = 660 Feet (Minimum Taper Length).
Cone Selection & Spacing Standards
| Cone Height | Standard Usage Application |
|---|---|
| 18-inch | Low-speed, low-volume daytime use only. |
| 28-inch | Standard for high-speed roads and all night ops (Requires 6″ & 4″ collars). |
| 36-inch | Premium visibility. Often required for NYSDOT and PennDOT expressway work. |
Maximum Spacing Rules
- Taper Spacing: Distance in feet should not exceed the speed limit in MPH.
- Tangent Spacing: For the work area, spacing can be doubled (2x Speed Limit).
Why Choose Eastern Metal Signs and Safety?
Compliance protects lives. Since 1947, Eastern Metal has been a leader in safety. From our Work Zone Supply durable PVC cones to our custom signs, we provide the hardware you need to set up every job site with total confidence.
Taper Length Calculator
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Disclaimer: This Taper Length Calculator is provided by Eastern Metal Signs and Safety for informational and educational purposes only. While the formulas used are based on the National MUTCD 11th Edition standards, results should be verified against your specific state (NYSDOT, PennDOT, etc.) or local Department of Transportation requirements. This tool is not a substitute for a certified Traffic Control Plan (TCP) or the professional judgment of a qualified safety engineer. Eastern Metal Signs and Safety is not liable for any errors, omissions, or accidents resulting from the use of this tool.
