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71 APPENDIX B Standards from Chapter 3B of the 2003 MUTCD That Are Referenced in this Synthesis Among the areas of interest of this synthesis, the only Stan- 3B.05 contains the following standard: "A channelizing line dards found within Part 3 of the 2003 MUTCD are the shall be a wide or double solid white line." Even in these stan- dards for longitudinal lines, flexibility is given regarding the following: width that may be used. Item E in Paragraph 1 of Section 3A.05 contains the follow- Paragraph 3 of Section 3B.05 contains the following stan- ing standard: "A dotted line shall consist of noticeably shorter dard: "Other pavement markings in the channelizing island area line segments separated by shorter gaps than used for a broken shall be white." line. The width of a dotted line shall be at least the same as the width of the line it extends." Paragraph 7 of Section 3B.05 contains the following stan- dard: "For exit ramps, channelizing lines shall be placed along Paragraph 3 of Section 3B.03 contains the following stan- the sides of the neutral area adjacent to the through traffic lane dard: "If a two-way left-turn lane that is never operated as a and the ramp lane." reversible lane is used, the lane line pavement markings on each side of the two-way left-turn lane shall consist of a nor- mal broken yellow line and a normal solid yellow line to delin- Paragraph 1 of Section 3B.08 contains the following stan- eate the edges of a lane that can be used by traffic in either dard: "Pavement markings extended into or continued through direction as part of a left-turn maneuver. These markings shall an intersection or interchange area shall be the same color and at be placed with the broken line toward the two-way left-turn least the same width as the line markings they extend (see Fig- lane and the solid line toward the adjacent traffic lane as shown ure 3B-11)." in Figure 3B-7." Paragraph 1 of Section 3B.16 contains the following stan- Paragraph 6 of Section 3B.03 contains the following stan- dard: "If used, stop lines shall consist of solid white lines extend- dard: "If a continuous median island formed by pavement mark- ing across approach lanes to indicate the point at which the stop ings separating travel in opposite directions is used, two sets of is intended or required to be made." double solid yellow lines shall be used to form the island as shown in Figures 3B-2 and 3B-4. Other markings in the median Paragraph 4 of Section 3B.17 contains the following stan- island area shall also be yellow, except crosswalk markings dard: "When crosswalk lines are used, they shall consist of solid which shall be white (see Section 3B.17)." white lines that mark the crosswalk. They shall be not less than 6 in. or greater than 24 in. in width." Paragraphs 3 and 4 of Section 3B.04 contain the following standards: "Where crossing the lane line markings with care is Paragraph 14 of Section 3B.19 contains the following stan- permitted, the lane line markings shall consist of a normal [4 to dard: "Where through traffic lanes approaching an intersection 6 in. wide] broken white line. Where crossing the lane line mark- become mandatory turn lanes, lane-use arrow markings (see Fig- ings is discouraged, the lane line markings shall consist of a nor- ure 3B-21) shall be used and shall be accompanied by standard mal [4 to 6 in. wide] solid white line." Paragraph 1 of Section signs."