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Safety Edge Demonstration Project – Menominee County, Wisconsin


Safety EdgeSM Demonstration Project

Menominee County, Wisconsin

Field Report
May 4, 2011

Downloadable Version
PDF [1.13 MB]

cover page


The purpose of this field report is to provide a summary of observations made during the hot mix asphalt (HMA) Safety EdgeSM project located in Menominee County Wisconsin. These observations and data are to be used with similar information from other Safety EdgeSM projects to facilitate the development of standards and guidance for Safety EdgeSM construction and long term performance.

All field and laboratory test results, HMA mixture design information and data, observations made during paving, and comments provided by construction personnel are included in the Field Evaluation Form that is provided as a separate document to this field report. This field report is a summary of the observations made on September 15, 2010 and field data measured during construction to evaluate the use of three edge devices, compare Safety EdgeSM and non-Safety EdgeSM portions along the project, determine the slope of the Safety EdgeSM, recommend adjustments to the Safety EdgeSM design if found to be needed, and identify benefits and complications with the use of the Safety EdgeSM devices.

Technical Report Documentation Page
1. Report No. 2. Government Accession No. 3. Recipient’s Catalog No.
4. Title and Subtitle
Safety EdgeSM Project, Seaford, Delaware
5. Report Date
May 4. 2011
6. Performing Organization Code
7. Author(s)
Paul Littleton and Jagannath Mallela
8. Performing Organization Report No.
9. Performing Organization Name and Address
Applied Research Associates, Inc.
100 Trade Centre Drive, Suite 200
Champaign, IL 61820
10. Work Unit No.
11. Contract or Grant No.
12. Sponsoring Agency Name and Address
Office of Bridge Technology, HIBT-10
Federal Highway Administration
6300 Georgetown Pike
McLean, VA 22101-2296
13. Type of Report and Period Covered
September 2010–May 2011
14. Sponsoring Agency Code
15. Supplementary Notes
Contracting Officer’s Technical Representative: Byron Lord and Mary Huie
Contracting Officer’s Technical Manager: Andy Mergenmeier

16. Abstract:
In a coordinated effort with highway authorities and industry leaders, the Every Day Counts initiative serves as a catalyst to identify and promote cost effective innovations to bring about rapid change to increase safety of our nations highway system, decrease project delivery time, and protect our environment. The Safety EdgeSM concept is an example of one such initiative in which the edge of the road is beveled during construction for the purpose of helping drivers who migrate off the roadways to more easily return to the road without over correcting and running into the path of oncoming traffic or running off the other side of the roadway.

This field report documents the observations made on the construction of Safety EdgeSM on a two lane highway hot mix asphalt (HMA) overlay project in Menominee County, Wisconsin. Safety EdgeSM paving devices from two manufacturers were demonstrated during this project. Details regarding the performance of each device along with the shape and physical properties of the finished Safety EdgeSM are presented for the purpose of understanding what processes and techniques were most successful in forming the Safety EdgeSM.

The findings from this overlay project and other similar ongoing projects form the basis for understanding the construction process and material performance necessary to bring this innovation into common highway practice and make our Nation’s highways safer.

17. Key Words
Safety EdgeSM, Slope, HMA, TransTech Shoulder Wedge Maker
18. Distribution Statement
No restriction.
19. Security Classif. (of this report)
20. Security Classif. (of this page)
21. No. of Pages
22. Price

Symbol When You Know Multiply By To Find Symbol
in inches 25.4 millimeters mm
ft feet 0.305 meters m
yd yards 0.914 meters m
mi miles 1.61 kilometers km
in2 square inches 645.2 square millimeters mm2
ft2 square feet 0.093 square meters m2
yd2 square yard 0.836 square meters m2
ac acres 0.405 hectares ha
mi2 square miles 2.59 square kilometers km2
fl oz fluid ounces 29.57 milliliters mL
gal gallons 3.785 liters L
ft3 cubic feet 0.028 cubic meters m3
yd3 cubic yards 0.765 cubic meters m3
NOTE: volumes greater than 1000 L shall be shown in m3
oz ounces 28.35 grams g
lb pounds 0.454 kilograms kg
T short tons (2000 lb) 0.907 megagrams (or "metric ton") Mg (or "t")
TEMPERATURE (exact degrees)
°F Fahrenheit 5 (F-32)/9 Celsius °C
    or (F-32)/1.8    
fc foot-candles 10.76 lux lx
fl foot-Lamberts 3.426 candela/m2 cd/m2
lbf poundforce  4.45 newtons N
lbf/in2 poundforce per square inch 6.89 kilopascals kPa
Symbol When You Know Multiply By To Find Symbol
mm millimeters 0.039 inches in
m meters 3.28 feet ft
m meters 1.09 yards yd
km kilometers 0.621 miles mi
mm2 square millimeters 0.0016 square inches in2
m2 square meters 10.764 square feet ft2
m2 square meters 1.195 square yards yd2
ha hectares 2.47 acres ac
km2 square kilometers 0.386 square miles mi2
mL milliliters 0.034 fluid ounces fl oz
L liters 0.264 gallons gal
m3 cubic meters 35.314 cubic feet ft3
m3 cubic meters 1.307 cubic yards yd3
g grams 0.035 ounces oz
kg kilograms 2.202 pounds lb
Mg (or "t") megagrams (or "metric ton") 1.103 short tons (2000 lb) T
TEMPERATURE (exact degrees)
°C Celsius 1.8C+32 Fahrenheit °F
lx lux 0.0929 foot-candles fc
cd/m2 candela/m2 0.2919 foot-Lamberts fl
N newtons 0.225 poundforce lbf
kPa kilopascals 0.145 poundforce per square inch lbf/in2

*SI is the symbol for the International System of Units. Appropriate rounding should be made to comply with Section 4 of ASTM E380.
(Revised March 2003)

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Page last modified on August 12, 2013.
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