Below are the first 10 and last 10 pages of uncorrected machine-read text (when available) of this chapter, followed by the top 30 algorithmically extracted key phrases from the chapter as a whole.
Intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text on the opening pages of each chapter.
Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.
Do not use for reproduction, copying, pasting, or reading; exclusively for search engines.
OCR for page 107
107
APPENDIX L
Two-Way Left-Turn Lanes
ALABAMA FLORIDA
The typical spacing between arrows is 32 ft. The spacing between arrows is 12 ft.
The minimum interval between sets of arrows is 200 ft, The maximum interval between sets of arrows is 300 ft.
but an interval of 400 ft is desirable (measured as the space
between the bottoms of the nearest arrows in each set).
GEORGIA
ARIZONA
The spacing between arrows is 25 ft.
The typical spacing between arrows is 32 ft.
IDAHO
The use of pavement arrows is optional. The spacing between the tips of the arrowheads is 18 to 32 ft,
depending on the prevailing speed.
ARKANSAS
The maximum interval between sets of arrows is 300 ft
The spacing between arrows is 32 ft. (measured from the center point between a pair of arrows to
the center point between the next pair of arrows) if the ADT
A set of arrows is placed 100 ft (measured to the center of the roadway is more than 10,000. If the ADT of the road-
point between the pair of arrows) from the beginning or end way is less than 10,000, the maximum interval between sets
of the two-way left-turn lane even when it is interrupted for of arrows is 500 ft. Sets of arrows should be placed such that
the tip of the nearest arrowhead is no closer than 50 ft to the
a one-direction left-turn lane at an intersection. A set of arrows
nearest edge of an intersecting street.
is placed 100 ft (measured to the center point between the
pair of arrows) from side streets if a gap is placed in the lane
line markings for the two-way left-turn lane. The interval be- ILLINOIS
tween sets of arrows is 500 to 1,000 ft in urban areas and
1,300 to 1,500 ft in rural areas. At least two sets of arrows shall be used. Additional sets of
arrows shall be placed at 200- to 300-ft intervals.
CALIFORNIA
INDIANA
The distance between the tips of the arrowheads is generally
equal to the left-turn arrow size. Although the typical left- The typical spacing between the tips of the arrowheads is
turn arrow is 8 ft long, an arrow that is 24 ft long may be used 32 ft.
on high-speed roadways.
The minimum interval between sets of arrows is 400 ft
The use of pavement arrows is optional. (measured from the center point between a pair of arrows to
the center point between the next pair of arrows).
COLORADO
IOWA
The typical spacing between the tips of the arrowheads is
32 ft. The typical spacing between the tips of the arrowheads is
32 ft.
DELAWARE The typical interval in feet between sets of arrows is ten
times the speed limit in mph (measured from the center point
The typical spacing between the tips of the arrowheads is between a pair of arrows to the center point between the next
32 ft. pair of arrows), or one set of arrows located midblock.
OCR for page 108
108
KANSAS Each segment of a continuous two-way left-turn lane is
considered separately. If the segment is shorter than 350 ft,
The typical spacing between arrows is 16 ft. one set of arrows is placed in the center of the segment. If the
segment is longer than 350 ft, the first set of arrows is placed
The typical interval in feet between sets of arrows is ten 50 to 100 ft from the beginning or end of the segment and
times the speed limit in mph (measured from the center point additional sets of arrows are placed at 250-ft intervals (mea-
between a pair of arrows to the center point between the next sured from the center point between a pair of arrows to the
pair of arrows). center point between the next pair of arrows).
LOUISIANA MONTANA
The typical spacing between the tips of the arrowheads is The spacing between the tips of the arrowheads is no less
32 ft. than 10 ft and no more than 20 ft.
At least one set of arrows is placed per block. The maxi- A set of arrows should be placed 50 ft from intersections
mum interval between sets of arrows is 750 ft. or the ends of single-direction turn lanes. At least two sets of
arrows should be used per block. The typical spacing be-
tween sets of arrows is 500 ft in urban areas and 1,320 ft in
MARYLAND rural areas.
The typical spacing between arrows is 16 ft.
NEBRASKA
The typical interval between sets of arrows is 800 ft (mea-
sured as the space between the bottoms of the nearest arrows The spacing between the tips of the arrowheads is 24 to 32 ft
in each set). in urban areas and 32 to 40 ft in rural areas.
A set of arrows shall be placed on each approach to all
NEVADA
intersecting streets at a distance of 50 ft from the beginning
of the centerline markings. The spacing between the tips of the arrowheads is 8 to 16 ft.
MICHIGAN NEW HAMPSHIRE
The spacing between the tips of the arrowheads is 32 ft. The spacing between the tips of the arrowheads is 8 ft.
The interval between sets of arrows can range from 300 to A set of arrows should be placed no less than 50 ft and no
1,000 ft (measured as the space between the bottoms of the more than 100 ft from the end of a single-direction turn lane
nearest arrows in each set) as determined by the region traf- (this distance is measured from the tip of the nearest arrow-
fic engineer. head to the end of the two-way left-turn lane).
MINNESOTA NEW YORK
The spacing between the tips of the arrowheads is 8 to 16 ft. The spacing between arrows is 5 ft.
The maximum interval between sets of arrows is 200 ft The typical interval between sets of arrows is 200 ft (mea-
(measured from the center point between a pair of arrows to sured as the space between the bottoms of the nearest arrows
the center point between the next pair of arrows). in each set).
Sets of arrows should be placed such that the center point A set of arrows should be placed 21 ft (shown as 6.5 m)
between a set of arrows is 50 ft from the resumption of the from the end of a single-direction turn lane (this distance is
centerline markings when they are interrupted for an inter- measured from the bottom of the nearest arrow to the end of
secting street. the two-way left-turn lane).
MISSISSIPPI NORTH CAROLINA
The spacing between arrows is 10 ft. The spacing between arrows is 10 ft.
OCR for page 109
109
The typical interval between sets of arrows is 320 ft (mea- TENNESSEE
sured from the center point between a pair of arrows to the
center point between the next pair of arrows). The spacing between arrows is typically 32 ft.
The maximum interval between sets of arrows is 0.5 mile.
OHIO
Arrows shall not be placed within 100 ft of intersecting
The spacing between the tips of the arrowheads is 8 to 16 ft. roadways.
The interval between sets of arrows should be 500 ft to TEXAS
1,000 ft for speeds up to 40 mph, and 1,000 ft to 1,500 ft for
speeds of more than 40 mph. The use of turn arrows is optional. If used, the spacing be-
tween the tips of the arrowheads is typically 8 to 16 ft.
A set of arrows should be placed 100 to 200 ft from the
near edge of intersecting roadways or from the ends of the If turn arrows are used, the maximum interval (measured
two-way left-turn lane. from the center point between a pair of arrows to the center
point between the next pair of arrows) between sets of arrows
is 1,500 ft and the minimum interval between sets of arrows
OKLAHOMA is 150 ft.
The spacing between arrows is 16 ft.
UTAH
The interval between sets of arrows is 200 ft (measured
as the space between the bottoms of the nearest arrows in The use of turn arrows is optional. If used, the spacing
each set). between the tips of the arrowheads is typically 33 ft.
If turn arrows are used, the maximum interval (measured
A set of arrows is placed 30 ft from the ends of the two-
between the tips of the arrowheads of the nearest arrows)
way left-turn lane, including when they are interrupted for
between sets of arrows is 300 ft and the minimum interval
intersecting roadways.
between sets of arrows is 100 ft.
OREGON WASHINGTON
The typical spacing between arrows is 8 to 16 ft (however, The spacing between the tips of the arrowheads is 5 to 10 ft.
Figure 20 of Oregon's Traffic Line Manual says that the typ-
ical spacing between the tips of the arrowheads is 30 ft). The maximum interval (measured from the center point
between a pair of arrows to the center point between the next
The minimum interval between sets of arrows is 250 ft pair of arrows) between sets of arrows is 500 ft. A set of
(measured from the center point between a pair of arrows to arrows is placed approximately 100 ft from the ends of two-
the center point between the next pair of arrows). Sets of way left-turn lanes.
arrows should be placed at even intervals, proportioned within
each block, with the approximate interval in feet being ten
WEST VIRGINIA
times the posted speed limit in mph.
The spacing between arrows is typically 32 ft.
PENNSYLVANIA The typical interval (measured from the center point be-
tween a pair of arrows to the center point between the next
The spacing between the tips of the arrowheads is 8 to 16 ft.
pair of arrows) between sets of arrows is 200 to 500 ft.
The typical interval between sets of arrows is 320 ft (mea-
sured from the center point between a pair of arrows to the WISCONSIN
center point between the next pair of arrows).
The spacing between arrows is 32 ft.
SOUTH DAKOTA The maximum interval between sets of arrows is 400 ft.
Sets of arrows should be placed near intersections or drive-
The spacing between the tips of the arrowheads is 16 ft. ways with turning traffic.
OCR for page 110
110
WYOMING point between a pair of arrows to the end of the two-way left-
turn lane).
The typical spacing between the tips of the arrowheads is 32 ft.
No standards were found for:
CHARLOTTE, NC Alaska Rhode Island
Connecticut South Carolina
The spacing between the tips of the arrowheads is 15 ft. Hawaii Vermont
Kentucky Virginia
The maximum interval (measured from the center point Maine District of Columbia
between a pair of arrows to the center point between the next Massachusetts Puerto Rico
pair of arrows) between sets of arrows is 300 ft and the min- Missouri Los Angeles, CA
imum interval between sets of arrows is 100 ft. New Jersey New York, NY
New Mexico Tucson/Pima County, AZ
A set of arrows is placed 25 ft from the end of a single- North Dakota
direction turn lane (this distance is measured from the center
