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OCR for page 87
87 APPENDIX E Lane Lines for Dual Turn Lanes CALIFORNIA INDIANA The solid lane line between the turn lanes must be at least The lane line between the two turn lanes may be extended 100 ft in length. Lane line extensions through the intersection through the intersection using a dotted line. A dotted line is typ- may be used. Lane line extensions are 4-in.-wide dotted lines ically comprised of 2-ft segments with 4-ft or longer gaps with (1-ft segments with 6-ft gaps). a segment-to-gap ratio of no greater than 1 to 4. If two left-turn lanes are used in opposing directions, the lane line extensions should not be placed any closer than 30 ft from each other. COLORADO Solid 8-in. lane lines are used to separate the two turn lanes KANSAS and to separate the turn lanes from the adjacent through lane. Both of these solid 8-in. lane lines are extended Lane line extensions are dotted lines (2-ft segments with 4-ft through the intersection using either solid or dotted lines gaps). (2-ft segments with 4-ft gaps). When dotted lane line ex- tensions are used, the portion of the lane line extension KENTUCKY from the stop line to the edge line extended of the cross street is a solid line. The extension of the line separating Lane line extensions are dotted lines (3-ft segments with 6-ft the right-most left-turn lane from the adjacent through lane gaps) of the same width as the line they extend. extends into the intersection just far enough to allow left- turning vehicles in opposite directions to miss each other MARYLAND by at least 4 ft. The solid lane line between the turn lanes and the adjacent FLORIDA through lane starts at the stop line and ends at the halfway point of the full-width turn lanes. A dotted line (3-ft segments A 6-in.-wide solid lane line is used between the two turn with 9-ft gaps) is used from the halfway point to the end of lanes. An 8-in.-wide solid lane line is used between the turn the full-width turn lanes. lanes and the adjacent through lane. The lane line between the two turn lanes is a broken line The lane line between the two turn lanes is required to be (10-ft segments with 30-ft gaps) that starts at the stop line and extended through the intersection using a dotted line (2-ft ends at the end of the full-width turn lanes. segments with 4-ft gaps). The lane lines to the left and/or The lane line between the two turn lanes may be extended right of the turn lanes may also be extended through the inter- through the intersection using a dotted line (3-ft segments section using a dotted line (2-ft segments with 4-ft gaps) if with 9-ft gaps). engineering judgment indicates that this would be helpful to drivers. MICHIGAN HAWAII A 4-in.-wide solid lane line is used between the two turn lanes and between the turn lanes and the adjacent through Lane line extensions are 4-in.-wide dotted lines (2-ft seg- lane. These solid 4-in.-wide lane lines start at the point where ments with 4-ft gaps). the full width first becomes available for the two turn lanes. Lane line extensions are dotted lines (2-ft segments with IDAHO 4-ft gaps). The lane line between the two turn lanes is required to be extended through the intersection using a dotted line (2-ft MONTANA segments with 4-ft gaps). When the volume of turning vehi- cles exceeds 200 per hour, a solid line is used for the exten- The lane line between the two turn lanes may be extended sion through the intersection of the lane line between the two through the intersection using a dotted line. A dotted line is turn lanes. typically comprised of 2-ft segments with 8-ft gaps.

OCR for page 87
88 NEVADA SOUTH CAROLINA An 8-in.-wide solid lane line is used between the turn lane and The lane line between the two turn lanes may be extended the adjacent through lane, and an 8-in.-wide solid lane line is through the intersection using a dotted line (2-ft segments used between the two turn lanes. These lane lines start at the with 5-ft gaps). stop line and end at the beginning of the full-width turn lane. TENNESSEE NEW HAMPSHIRE Solid lane lines that are 4 in. wide are used between the two The lane line between the two turn lanes may be extended turn lanes and between the turn lane and the adjacent through through the intersection using a dotted line. A dotted line is lane. Both lane lines start at the stop line and end at the begin- comprised of 2-ft segments with 6-ft gaps. ning of the full-width turn lanes. The lane line between the two turn lanes is typically ex- NEW YORK tended through the intersection using an 8-in.-wide dotted line (2-ft segments with 4-ft gaps). The lane line between the two turn lanes may be extended through the intersection using a 4-in.-wide dotted line. A dot- ted line is typically comprised of 2-ft segments with 4-ft gaps. VIRGINIA The lane line between the two turn lanes is extended through NORTH CAROLINA the intersection using a dotted line (2-ft segments with 4-ft gaps). A 4-in. or 6-in.-wide solid lane line is used between the two turn lanes. This lane line starts at the stop line and ends at the midpoint of the full-width turn lanes. From the midpoint to WASHINGTON the upstream end of the full-width turn lanes, a 4-in. or 6-in.- wide broken lane line (10-ft segments with 30-ft gaps) is used. A broken lane line is used between the two turn lanes. A 4-in. or 6-in.-wide solid lane line is used between the turn The lane line between the two turn lanes is extended through lane and the adjacent through lane. This lane line starts at the the intersection using a dotted line (2-ft segments with 6-ft stop line and ends at the beginning of the full-width turn lanes. gaps). The lane line between the two turn lanes is required to be WEST VIRGINIA extended through the intersection using a dotted line (2-ft segments with 8- or 13-ft gaps). The lane line between the two turn lanes may be extended through the intersection using a 4-in.-wide dotted line (0.5-ft segments with 2-ft gaps). OREGON The lane line between the two turn lanes may be extended WYOMING through the intersection using a dotted line or a solid line. The dotted or solid line may be continued through a marked The lane line between the two turn lanes is typically extended crosswalk. A dotted line is comprised of 2-ft segments with through the intersection using either a dotted line (2-ft seg- 6-ft gaps. ments with 6-ft gaps) or a solid line. PENNSYLVANIA DISTRICT OF COLUMBIA The lane line between the two turn lanes may be extended The lane line between the two turn lanes may be extended through the intersection using a dotted line (2-ft segments through the intersection using a 4-in.-wide dotted line (2-ft with 4-ft gaps). segments with 4-ft gaps). RHODE ISLAND CHARLOTTE, NC The lane line between the two turn lanes is required to be The lane line between the two turn lanes may be extended extended through the intersection using a dotted line (2-ft through the intersection using a dotted line (2-ft segments segments with 4-ft gaps). with 4-ft gaps).

OCR for page 87
89 LOS ANGELES, CA The lane line between the two turn lanes is extended through the intersection using a 4-in.-wide dotted line (2-ft A solid lane line is used between the two turn lanes. This lane segments with 6-ft gaps). If two left-turn lanes are used in line starts at the stop line and ends at the beginning of the full- opposing directions, the lane line extensions typically cannot width turn lanes. be placed any closer than 26 ft from each other. A solid lane line is used between the turn lane and the No standards were found for: adjacent through lane. This lane line starts at the stop line and ends at the midpoint between the upstream end of the full- Alabama Missouri width turn lanes and the upstream end of the turn lane taper. Alaska Nebraska Arizona New Jersey The lane line between the two turn lanes may be extended Arkansas New Mexico through the intersection using a dotted line (1-ft segments Connecticut North Dakota with 8-ft gaps). Delaware Ohio Georgia Oklahoma Illinois South Dakota TUCSON/PIMA COUNTY, AZ Iowa Texas Louisiana Utah Solid lane lines that are 8 in. wide are used between the two Maine Vermont turn lanes and between the turn lane and the adjacent through Massachusetts Wisconsin lane. Both lane lines start at the stop line and end at the begin- Minnesota Puerto Rico ning of the full-width turn lanes. Mississippi New York, NY