The National Academies Press

Currently Skimming:

Pages 60-83

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.

From page 60... ... 60 A p p e n d i x A This appendix presents tables and figures that were referenced in Chapter 4 of this report but were not shown there. They primarily show detailed descriptive statistics for many of the variables included in or considered for analysis. Read the entire page →
From page 61... ... 61 Table A.1. Signalized Intersection Characteristics and Number of Trips in Study Route 1 Name Route 2 Name Direction Measured Offset (ft) Read the entire page →
From page 62... ... 62Table A.1. Signalized Intersection Characteristics and Number of Trips in Study (continued) Read the entire page →
From page 63... ... 63 Indiana N DUNN STb E MATLOCK RDb N-S -13 90 1 30 35 Permissive 4 17 14 S WALNUT ST W GRIMES LN E-W -11 90 1 30 30 Permissive/ protected 9 27 4 North Carolina CREEDMOOR RD STONEHENGE DR N-S -8 90 2 45 45 Permissive/ protected 1 2 FRANKLIN STb HILLSBORO STb NE-SW 0 90 2 20 30 Permissive 9 24 4 EBENEZER CHURCH RD MARVINO LN N-S 0 90 2 35 35 Permissive 2 10 EBENEZER CHURCH RD MARVINO LN E-W -2 90 1 35 35 Permissive 2 2 2 185 452 207 a At this left-turn offset pair of approaches, one had permissive left-turn phasing while the other had permissive/protected phasing. In the analysis, the appropriate left-turn signal phasing was assigned to each event at that intersection. Read the entire page →
From page 64... ... 64Table A.2. Two-Way Stop-Controlled Intersection Characteristics and Number of Trips in Study Route 1 Name Route 2 Name Direction Measured Offset (ft) Read the entire page →
From page 65... ... 65 Traffic control Signalized Two-Way Stop-Controlled FREQ. 4 3 7 8 11 5 6 0 2 0 0 0 0 0 0 2 3 1 3 0 0 0 1 0 0 2 0 0 Offset categoryState WA NC IN FL (g) Read the entire page →
From page 66... ... 66 Gap acceptance NO YES FREQ. 196 23 221 590 534 234 98 0 77 0 0 0 0 0 0 0 4 4 84 0 0 Offset categoryState NC IN FL (g) Read the entire page →
From page 67... ... 67 Signalized Intersections Red dot = mean; Horizontal line = median; Colored box = mid 50% of data; Blue circle = extreme value NO YES NO NONO YESYES NO NOYESYES NO YESYES -5 0 5 10 15 20 P o s t e n c r o a c h m e n t t i m e ( s e c ) f o r a c c e p t e d g a p s Sight distance obstructed? Read the entire page →
From page 68... ... 68Two-Way Stop-Controlled Intersections Red dot = mean; Horizontal line = median; Colored box = mid 50% of data; Blue circle = extreme value NO NO NO NOYESYESYES YES 0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0 22.5 25.0 P o s t e n c r o a c h m e n t t i m e ( s e c ) f o r a c c e p t e d g a p s Sight distance obstructed? Read the entire page →
From page 69... ... 69 Signalized Intersections Red dot = mean; Horizontal line = median; Colored box = mid 50% of data; Blue circle = extreme value 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 A v a i l a b l e g a p l e n g t h ( s e c ) Age group (a) Read the entire page →
From page 70... ... 70 Signalized Intersections Red dot = mean; Horizontal line = median; Colored box = mid 50% of data; Blue circle = extreme value Female Male Female Male Female Male Female Male Female Male Female Male Female Male 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 A v a i l a b l e g a p l e n g t h ( s e c ) NDS driver gender (a) Read the entire page →
From page 71... ... 71 Signalized Intersections Red dot = mean; Horizontal line = median; Colored box = mid 50% of data; Blue circle = extreme value 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 A c c e p t e d g a p l e n g t h ( s e c ) Age group (a) Read the entire page →
From page 72... ... 72Signalized Intersections Red dot = mean; Horizontal line = median; Colored box = mid 50% of data; Blue circle = extreme value Female Male Female Male Female Male Female Male Female Male Female Male Female Male 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 A c c e p t e d g a p l e n g t h ( s e c ) NDS driver gender (a) Read the entire page →
From page 73... ... 73 Two-Way Stop-Controlled Intersections Red dot = mean; Horizontal line = median; Colored box = mid 50% of data; Blue circle = extreme value 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 A v a i l a b l e g a p l e n g t h ( s e c ) Age group (a) Read the entire page →
From page 74... ... 74 Two-Way Stop-Controlled Intersections Red dot = mean; Horizontal line = median; Colored box = mid 50% of data; Blue circle = extreme value Female Male Female Male Female Male Female Male 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 A v a i l a b l e g a p l e n g t h ( s e c ) NDS driver gender (a) Read the entire page →
From page 75... ... 75 Two-Way Stop-Controlled Intersections Red dot = mean; Horizontal line = median; Colored box = mid 50% of data; Blue circle = extreme value 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 A c c e p t e d g a p l e n g t h ( s e c ) Age group (a) Read the entire page →
From page 76... ... 76Two-Way Stop-Controlled Intersections Red dot = mean; Horizontal line = median; Colored box = mid 50% of data; Blue circle = extreme value Female Male Female Male Female Male Female Male 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 A c c e p t e d g a p l e n g t h ( s e c ) NDS driver gender (a) Read the entire page →
From page 77... ... 77 Signalized Intersections Red dot = mean; Horizontal line = median; Colored box = mid 50% of data; Blue circle = extreme value 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ -2 0 2 4 6 8 10 12 14 16 P o s t e n c r o a c h m e n t t i m e ( s e c ) f o r a c c e p t e d g a p s Age group (a) Read the entire page →
From page 78... ... 78 Signalized Intersections Red dot = mean; Horizontal line = median; Colored box = mid 50% of data; Blue circle = extreme value Female Male Female Male Female Male Female Male Female Male Female Male Female Male -2 0 2 4 6 8 10 12 14 16 NDS driver gender (a) -16 ft or less (b) Read the entire page →
From page 79... ... 79 Two-Way Stop-Controlled Intersections Red dot = mean; Horizontal line = median; Colored box = mid 50% of data; Blue circle = extreme value 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 16-20 21-25 26-65 66+ 0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0 22.5 25.0 Age group (a) -16 ft or less (b) Read the entire page →
From page 80... ... 80Two-Way Stop-Controlled Intersections Red dot = mean; Horizontal line = median; Colored box = mid 50% of data; Blue circle = extreme value Female Male Female Male Female Male Female Male 0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0 22.5 25.0 NDS driver gender (a) -16 ft or less (b) Read the entire page →
From page 81... ... 81 A cc ep te d ga p le ng th (s ec ) 0 2 4 6 8 10 12 14 16 18 Time spent waiting for accepted gap (sec) Read the entire page →
From page 82... ... 82 Po st -E nc ro ac hm en t T im e (se c) -2 0 2 4 6 8 10 12 14 16 Time spent waiting for accepted gap (sec) Read the entire page →
From page 83... ... 83 Light condition dark w/ lights dark w/o light dusk/dawn light FREQ. 26 0 1 214 52 7 108 865 51 0 35 340 41 0 48 505 82 0 34 609 33 0 7 194 11 0 4 83 Light conditionOffset category (g) Read the entire page →

From page 60...

... 60 A p p e n d i x A This appendix presents tables and figures that were referenced in Chapter 4 of this report but were not shown there. They primarily show detailed descriptive statistics for many of the variables included in or considered for analysis.