National Academies Press: OpenBook

Pavement Markings--Design and Typical Layout Details (2006)

Chapter: Appendix F - Dotted Lines in Turn Lane Tapers

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Page 90
Suggested Citation:"Appendix F - Dotted Lines in Turn Lane Tapers." National Academies of Sciences, Engineering, and Medicine. 2006. Pavement Markings--Design and Typical Layout Details. Washington, DC: The National Academies Press. doi: 10.17226/13947.
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Page 90
Page 91
Suggested Citation:"Appendix F - Dotted Lines in Turn Lane Tapers." National Academies of Sciences, Engineering, and Medicine. 2006. Pavement Markings--Design and Typical Layout Details. Washington, DC: The National Academies Press. doi: 10.17226/13947.
×
Page 91
Page 92
Suggested Citation:"Appendix F - Dotted Lines in Turn Lane Tapers." National Academies of Sciences, Engineering, and Medicine. 2006. Pavement Markings--Design and Typical Layout Details. Washington, DC: The National Academies Press. doi: 10.17226/13947.
×
Page 92

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90 ALABAMA A 4-in.-wide dotted line (2-ft segments with 4-ft gaps) is placed from the beginning of the turn lane taper to the start of the solid 6-in. or 8-in.-wide lane line separating the turn lane from the adjacent through lane. ALASKA Dotted lines are not shown in turn lane tapers. ARIZONA Dotted lines are not shown in turn lane tapers. ARKANSAS Dotted lines are not shown in turn lane tapers. CALIFORNIA Dotted lines are not shown in turn lane tapers. COLORADO Dotted lines are not used in turn lane tapers. DELAWARE A dotted line (2-ft segments with 6-ft gaps) is placed from the beginning of the turn lane taper to the start of the solid 4-in.-wide lane line separating the turn lane from the adja- cent through lane. FLORIDA Dotted lines are not typically used in turn lane tapers. How- ever, in curves or in other areas where drivers in the through lane might need extra guidance to avoid unintentionally drift- ing into a turn lane, a broken lane line (6-ft segments with 10-ft gaps) may be used. GEORGIA A 5-in.-wide dotted line (2-ft segments with 6-ft gaps) is placed from the beginning of the turn lane taper to the start of the solid 5-in.-wide lane line separating the turn lane from the adjacent through lane. IDAHO Except for the situation where a left-turn lane is formed by widening between the through lanes on a two-way highway, dotted lines are not shown in turn lane tapers. KENTUCKY Dotted lines are not shown in turn lane tapers. MARYLAND Dotted lines start at the point where the full-width turn lane starts, but are not shown in turn lane tapers. MICHIGAN Dotted lines are not shown in turn lane tapers. MINNESOTA Dotted lines are not shown in turn lane tapers. MISSISSIPPI Dotted lines are not shown in turn lane tapers. MONTANA Dotted lines are not shown in turn lane tapers. NEBRASKA Dotted lines are not shown in turn lane tapers. NEVADA Dotted lines are not shown in turn lane tapers. NEW HAMPSHIRE Dotted lines are not shown in turn lane tapers. APPENDIX F Dotted Lines in Turn Lane Tapers

91 NEW YORK Dotted lines are not shown in turn lane tapers. NORTH CAROLINA A 4-in. to 6-in.-wide dotted line (2-ft segments with 13-ft gaps) is placed from the beginning of the turn lane taper to the start of the solid 4-in. to 6-in.-wide lane line separating the turn lane from the adjacent through lane. OHIO Dotted lines are optional in turn lane tapers. OKLAHOMA Dotted lines are not shown in turn lane tapers. OREGON Dotted lines (2-ft segments with 6-ft gaps) are optional in turn lane tapers. PENNSYLVANIA Dotted lines are not shown in turn lane tapers. RHODE ISLAND Dotted lines (2-ft segments with 4-ft gaps) should be used across the entrance to a left-turn lane. SOUTH CAROLINA Dotted lines are not shown in turn lane tapers. SOUTH DAKOTA Dotted lines are not shown in turn lane tapers. TENNESSEE Dotted lines are not shown in turn lane tapers. TEXAS Dotted lines are not shown in turn lane tapers. UTAH Dotted lines are not shown in turn lane tapers. VERMONT A 4-in.-wide dotted line (2-ft segments with 4-ft gaps) is placed from the beginning of the turn lane taper to the start of the solid 4-in.-wide lane line separating the turn lane from the adjacent through lane. VIRGINIA If the distance between the beginning of the turn lane taper and the beginning of the lane line separating the turn lane from the adjacent through lane is longer than 100 ft, a dotted line (2-ft segments with 4-ft gaps) is placed from the begin- ning of the taper to the start of the solid lane line. If the dis- tance between the beginning of the turn lane taper and the beginning of the lane line separating the turn lane from the adjacent through lane is 100 ft or less, a dotted line is not used. WASHINGTON Dotted lines are not shown in turn lane tapers. WEST VIRGINIA Dotted lines are not shown in turn lane tapers. WISCONSIN Dotted lines are not shown in turn lane tapers. WYOMING Dotted lines are not shown in tapers of left-turn lanes. A 4-in.-wide dotted line (2-ft segments with 6-ft gaps) may be placed from the upstream end of the turn lane taper to the start of the solid 8-in.-wide lane line separating a right- turn lane from the adjacent through lane. DISTRICT OF COLUMBIA Where a turn lane occurs on a horizontal curve, an 8-in.-wide dotted line (2-ft segments with 4-ft gaps) is used. PUERTO RICO Dotted lines are not shown in turn lane tapers. CHARLOTTE, NC A dotted line (2-ft segments with 10-ft gaps) is placed from the upstream end of the turn lane taper to the start of the solid lane line separating the turn lane from the adjacent through lane.

LOS ANGELES, CA Dotted lines are not shown in turn lane tapers. TUCSON/PIMA COUNTY, AZ Dotted lines are not shown in turn lane tapers. 92 No standards were found for: Connecticut Maine Hawaii Massachusetts Illinois Missouri Indiana New Jersey Iowa New Mexico Kansas North Dakota Louisiana New York, NY

Next: Appendix G - Left-Turn Lane Added Between the Through Lanes of a Two-Way Highway »
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TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 356: Pavement Markings—Design and Typical Layout Details identifies variations in pavement marking designs, practices, and policies, as provided by 48 of 50 state departments of transportation, and transportation agencies from the District of Columbia, Puerto Rico and four cities.

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