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STOPPING POINT FOR
LEFT TURN LANE
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TWO-WAY LEFT -TURN
CENTER LINE
SEE CONTRACT FOR LENGTH
OF STORAGE LANE
50,
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=100,
E + 50' 25'
WHITE EDGE
/i LINE
500' MAX.
WIDE LANE LINE DOUBLE CENTERLINE (YELLOW) 16'
(NARROW PATTERN) (TYp,
LEFT -TURN CHANNELIZATION
IN TWO-WAY LEFT -TURN LANE
TAPER F
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WHITE EDGE LINE JI
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16' DOUBLE CENTERLINE (YELLOW)
4- OF J (NARROW PATTERN)
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TWO-WAY LEFT -TURN LANE TRANSITION
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TWO-WAY LEFT -TURN y 4'-8"
CENTERLINE z 1 N 2'- 4" 1 T- 0" �10
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NOTES "
1. The channelization shown on this plan assumes optimal roadway geometric design.
The dimensions may vary to fit existing conditions. See Contract.
2. The channelization shown on this plan is for a two-lane highway. The channelization
plan may be used on four -lane undivided highways with the appropriate considerations.
3. Centerline striping on the approach to raised channelization shall be No Pass in
accordance with MUTCD figure 313-15. Centerline striping on the departure from
raised channelization shall be determined by an engineering study.
4. Centerline srtiping on the approach to and departure from painted channelization
shall be determined by an engineering study.
5. Centerline striping on four -lane undivided highways shall be a double centerline.
6. The two Type 2L (SL) Traffic Arrows shown in the left -turn storage lane are optional,
but recommended. Arrows may be added for longer storage lanes or deleted for shorter
storage lanes. See Contract Plans.
LEGEND
J CENTERLINE STRIPE
(SEE NOTES)
POSTED
SPEED
DIMENSION
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APPROACH
TAPER
F
HIGH SPEED
60 MPH
180,
360'
55 MPH
180'
330'
50 MPH
180,
300'
45 MPH
180,
270'
LOW SPEED
40 MPH
120'
240'
35 MPH
120'
210'
30 MPH
120'
180'
25 MPH
120'
150'
20 MPH
120'
120'
SEE CONTRACT FOR LENGTH Can be reduced to a minimum of
OF STORAGE LANE 0
50' to increase storage capacity.
50' J 50' E OPTIONAL DOTTED DIRECTION OF TRAFFIC
EXTENSION LINE YELLOW EDGE LINE
YELLOW CROSSHATCH
J MARKING YELLOW EDGE LINE
STOPPING POINT FOR
LEFT TURN LANE
-- -
---— ------��--- -vim- ------0-- --- --- --- --- --- --- --- - - y.
WIDE LANE LINE 20' MIN.
J PAINTED OR PLASTIC 40' MAX. YELLOW EDGE LINE
DOUBLE CENTERLINE (YELLOW) WHITE EDGE LINE
(NARROW PATTERN) MEDIAN - SEE DETAIL
DIRECTION OF TRAFFIC
LEFT -TURN CHANNELIZATION PAINTED OR PLASTIC MEDIAN
IN PAINTED MEDIAN COMPOSED OF LONGITUDINAL MARKINGS
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SYMBOL
& LANE
1'-3"
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MARKING AREA
8.03 SQ.FT.
4"
8"
TYPE 1S
TRAFFIC ARROW
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=T.
TYPE 2SR (RIGHT)
TRAFFIC ARROW
MIRROR IMAGE OF
TYPE 2SL TRAFFIC ARROW
(SHOWN AT REDUCED SCALE)
SYMBOL & LANE
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CENTER POINT
OF ELLIPSES
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GRID IS 4" (IN) SQUARE
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ELLIPSE "A"
ELLIPSE "B"
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MARKING AREA 8"
7.73 SQ.FT.
1'-2" 1'-6"
/ELLIPSE "A"
J 10" -ELLIPSE "B" AXIS AXIS
TYPE 2SL (LEFT) TRAFFIC ARROW
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NOTE
Use the dimensions shown on this plan for each type of Traffic Arrow
being placed on roadways with a posted speed limit of 40 mph or lower.
SYMBOL
& LANE
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ELLIPSE "A"
ELLIPSE "B"
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CENTER POINT
OF ELLIPSES !
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4—
GRID IS 4" (IN) SQUARE
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MARKING AREA g g
14.83 SQ.FT.
1' - 2" 1' -6"
ELLIPSE "A"
AXIS
10" - ELLIPSE "B" AXIS
TYPE 3SL (LEFT) TRAFFIC ARROW
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CID
ELLIPSE "B"
MARKING AREA
14.83 SQ.FT.
TYPE 3SR (RIGHT)
TRAFFIC ARROW
MIRROR IMAGE OF
TYPE 3SL TRAFFIC ARROW
(SHOWN AT REDUCED SCALE)
L = 12' Typical Lane Width. See Contract for
specified lane widths.
Type 2L (SQ Traffic Arrow
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TWO-WAY LEFT -TURN
AND MEDIAN
CHANNELIZATION
STANDARD PLAN M-3.40-03 LL
SHEET 1 OF 1 SHEET }
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APPROVED FOR PUBLICATION o
Pasco 6akotich Ill 06-03-11 }
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STATE DESIGN ENGINEER DATE j
Admok
Washington State Department of Transportation >�
T - 4" 1' - 0" I_S SYMMETRICAL ABOUT
1'-2" 2'-4"
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SYMBOL
& LANE
ELLIPSE "A"
#
MARKING AREA
12.86 SQ.FT.
GRID IS 4" (IN) SQUARE
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ENTER POINT
LOFE
ELLIPSES S
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8"
TYPE 4S
TRAFFIC ARROW 1' - 6" 1' - 2"
ELLIPSE "A"\
AXIS 10" - ELLIPSE "B" AXIS
SYMBOL MARKINGS
TRAFFIC ARROWS FOR
LOW -SPEED ROADWAYS
STANDARD PLAN M-24.40-02
SHEET 1 OF 2 SHEETS
APPROVED FOR PUBLICATION
<"-"-�.Apr
2A0 2, Pasco
. Apr 0 015 10:11 AM
STATE DESIGN ENGINEER
Washington State Department of Transportation
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SYMBOL
& LANE
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1'-4" �+
1'-2"
SYMMETRICAL ABOUT
GRID IS 4" (IN) SQUARE
ELLIPSE
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ELLIPSE xx
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CENTER POINT
OF ELLIPSES
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8" 8"
1'-6" 1'-2"
MARKING AREA ELLIPSE "A"�
19.58 SQ.FT. AXIS
10" -ELLIPSE "B" AXIS
TYPE 7S TRAFFIC ARROW
LANE
2'- 5/8'.
(z 2.05)
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TYPE 6SL (LEFT)
TRAFFIC ARROW
TYPE 6SR (RIGHT)
TRAFFIC ARROW
MIRROR IMAGE OF TYPE 6SL
(MIRRORED ABOUT LANE CENTERLINE)
(SHOWN AT REDUCED SCALE)
SYMBOL MARKINGS
TRAFFIC ARROWS FOR
LOW -SPEED ROADWAYS
STANDARD PLAN M-24.40-02
SHEET 2 OF 2 SHEETS
APPROVED FOR PUBLICATION
^ Bak -Apr 2'0 2015 10:11 AM
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_ STATE DESIGN ENGINEER
AM
Washington State Department of Transportation
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SHEET: 41 /C H-9
OF: 70
JOB NO.: 17534
DWG: STD —DETAILS