U.S. Department of Transportation
Federal Highway Administration
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Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations
| ERRATA |
| This report is an archived publication and may contain dated technical, contact, and link information |
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| Publication Number: FHWA-HRT-13-077 Date: January 2014 |
Publication Number: FHWA-HRT-13-077 Date: January 2014 |
| Date: | November 16, 2014 |
| Issuing Office: | Federal Highway Administration—Office of Research, Development, and Technology: Safety Research and Development |
| Address: | Turner-Fairbank Highway Research Center, 6300 Georgetown Pike, McLean, VA 22101 |
| Name of Document: | Safety Effects of Horizontal Curve and Grade Combinations on Rural Two-Lane Highways |
| FHWA Publication No.: | FHWA-HRT-13-077 |
The following changes were made to the document after publication:
| Location | Incorrect Values | Corrected Values |
|---|---|---|
| Page i, Block 21 | 63 | 68 |
| Page 4, SAFETY EFFECTS OF HORIZONTAL ALIGNMENT, Paragraph 1, Sentence 1, Line 2 | follows | shown in figure 2 |
| Page 4, SAFETY EFFECTS OF HORIZONTAL ALIGNMENT, Paragraph 1, Sentence 1, Figure 2 | N = [1.55 (LC)(V) + 0.014(D)(V) − 0.012(S)(V)](0.978)W − 30 | N = [1.55 (LC)(V) + 0.014(D)(V) − 0.012(S)(V)](0.978)W − 30 |
| Page 5, Paragraph 3, Sentence 2 | in the following form: | shown in figure 3: |
| Page 5, Paragraph 6, Sentence 1 | in the following form: | as shown in figure 4: |
| Page 8, Paragraph 1, Sentence 10 | (A = abs(G1 – G2)) | [A = abs(G1 – G2)] |
| Page 9, DESCRIPTIVE STATISTICS, Paragraph 1, Sentence 1 | (million vehicle miles traveled in the 6-year period (MVMT)) | [million vehicle miles traveled in the 6-year period (MVMT)] |
| Page 14, Paragraph 2, Bullet 2 | (this is a standard analysis of variance (ANOVA) using an NB distribution and a log link) | [this is a standard analysis of variance (ANOVA) using an NB distribution and a log link] |
| Page 16, Paragraph 2, Sentence 1 | follows | shown in figure 6 and figure 7 |
| Page 16, Paragraph 4, Bullet 1,Sentence 2 | follows | shown in figure 8 |
| Page 17, Horizontal Curves and Tangents on Straight Grades, Paragraph 1,Sentence 1, Bullet 1 | (number of roadway segments (N) = 8,095 and total roadway length = 595 mi) | [number of roadway segments (N) = 8,095 and total roadway length = 595 mi] |
| Page 17, Horizontal Curves and Tangents on Straight Grades, Paragraph1, Sentence 1 | (i.e., number of roadway sections); total roadway length; and minimum, maximum, mean, and median values for specific parameters) | (i.e., number of roadway sections; total roadway length; and minimum, maximum, mean, and median values for specific parameters) |
| Page 18, Paragraph 1, Sentence 1 | follows | shown in figure 10 and figure 11 |
| Page 20, Paragraph 5, Sentence 1 | follows | shown in figure 12, figure 13, and figure 14 |
| Page 23, Paragraph 1, Sentence 1 | as follows | shown in figure 16 and figure 17 |
| Page 25, Paragraph 2, Sentence 1 | follows | shown in figure 18 and figure 19 |
| Page 26, Paragraph 1, Sentence 2 | follows | shown in figure 20 and figure 21 |
| Page 28, Paragraph 1, Sentence 1 | follows | shown in figure 23 and figure 24 |
| Page 29, Paragraph 5, Sentence 1 | follows | shown in figure 25 and figure 26 |
| Page 30, Paragraph 2, Sentence 3 | follows | shown in figure 27 and figure 28 |
| Page 32, Paragraph 1, Sentence 1 | follows | shown in figure 30 and figure 31 |
| Page 33, Paragraph 4, Sentence 1 | follows | shown in figure 32 and figure 33 |
| Page 36, Paragraph 1, Sentence 1 | follows | shown in figure 35 and figure 36 |
| Page 37, Paragraph 4, Sentence 1 | follows | shown in figure 37 and figure 38 |
| Page 39, HORIZONTAL CURVES AND TANGENTS ON STRAIGHT GRADES, Paragraph 1, Sentence 1 | follows | shown in figure 39 and figure 40 |
| Page 42, HORIZONTAL CURVES AND TANGENTS AT TYPE 1 CREST VERTICAL CURVES, Paragraph 1, Sentence 1 | follows | shown in figure 43 and figure 44 |
| Page 44, HORIZONTAL CURVES AND TANGENTS AT TYPE 1 SAG VERTICAL CURVES, Paragraph 1, Sentence 1 | follows | shown in figure 47 and figure 48 |
| Page 46, HORIZONTAL CURVES AND TANGENTS AT TYPE 2 CREST VERTICAL CURVES, Paragraph 1, Sentence 1 | follows | shown in figure 51 and figure 52 |
| Page 48, HORIZONTAL CURVES AND TANGENTS AT TYPE 2 SAG VERTICAL CURVES, Paragraph 1, Sentence 1 | follows | shown in figure 55 and figure 56 |
| Page 50, CMFs FOR COMBINED CRASH SEVERITY LEVELS, Paragraph 1, Sentence 3 | follows | shown in figure 59 |
