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BUFFER DATA
LONGITUDINAL BUFFER SPACE = B
SPEED (MPH)
25
30
35
40
45
50
55
60
65
70
LENGTH (feet)
155
200
250
305
360
425
495
570
645
-
BUFFER VEHICLE
ROLL
AHEAD DISTANCE =
R
TRANSPORTABLE ATTENUATOR
30 FEET MIN,
MINIMUM HOST VEHICLE WEIGHT
15,000
LBS. THE MAXIMUM
TO
WEIGHT SHALL BE IN ACCORDANCE WITH THE MANUFACTURERS
100 FEET MAX.
RECOMMENDATION.
PROTECTIVE VEHICLE
NO SPECIFIED
MAY BE A WORK VEHICLE STRATEGICALLY LOCATED TO SHIELD
DISTANCE
THE WORK AREA
REQUIRED
\D,',,
ROA
WORK
~` 46"" AHEAD
4&'
ONELANE I
ROAD � w20-1
AHEAD
48"
W20-4 ,4r
K
PREPARED
TO STOP
\ 48M
x
40"_
. W20-78
1
48' x
W20-7A
f E
U2 DEVICE SPACING 112 DISTANCE
FOR OPPOSING TRAFFIC DEVICES
1130El13000131>300131301300011011,11301300 CI
-�
X x L12
r
i pp _ r
f 4r
ROAD
WORK
AHEAD
46" f
48"�
W20-1
WI-4(L)
1.F OPTIONAL IF 40 MPH OR LESS
LEGEND
FLAGGING STATION
-q TEMPORARY SIGN LOCATION
® CHANNELIZING DEVICES
,, PROTECTIVE VEHICLE - RECOMMENDED
X TEMPORARY SIGN LOCATION (5' MOUNTING HEIGHT)
FILE NAME
TIME
DATE
PLOTTED BY
DESIGNED BY
ENTERED BY
S:IDecl n R PS Si4-Standarda12-Plan Sheet Libra
1:27:17 PM u
9/1812014
FletaCo
CHECKED BY _
PROJ. ENGR.
REGIONAL ADM.
0
W20.7A
MINIMUM TAPER LENGTH = L (feet)
LANE
WIDTH
(feet)
Pasted Speed (mph)
25
30
35
40
45
5Q
55
60
65
70
10
105
150
205
270
1 450
500
550
-
-
-
11
115
165
225
295
495
550
605
660
-
-
12
125
180
245
320
540
600
660
720
-
-
BE
PREPARED
46" TO STOP
■
W20-76
4r
W20-7A
x I x
SIGN SPACING
= X (1)
RURAL
HIGHWAYS
60 165 MPH
800't
RURAL
ROADS
45 155 MPH
5001t
RURAL
ROADS & URBAN ARTERIALS
35 140 MPH
350't
RURAL
ROADS & URBAN ARTERIALS
25 130 MPH
200't (2)
RESIDENTAL & BUSINESS DISTRICTS
URBAN
STREETS
25 MPH OR LESS 100't (2)
(1) ALL
SPACING MAY BE ADJUSTED TO
ACCOMMODATE
INTERCHANGE
RAMPS, AT -GRADE INTERSECTIONS AND DRIVEWAYS.
(2) THIS
SPACING MAY BE REDUCED IN
URBAN AREAS
TO FIT
ROADWAY CONDITIONS
48"
ROAD
Q WORK
' 4r, AHEAD
WIT LANE 48
CLOSED W20.1
AHEAD
48m
W20-BC
L12 x x
� I
-- 0T
�DEVICE SPACING 112 DISTANCE L12
FIOR OPPOSING TRAFFIC DEVICES 24"
I
f KEEP
f
480 OO► 30"
x . RIGHT
R4-7B
480 0/W
x $' W20-7A
HE
PREPARED
TO STOP
i`481,
w20.76
46'
ROAD
WORK
AHaEAn 41�pn
W20.1
48`
ONE LANE
ROAD
AHEAD
46"
W20-4
INTERSECTION LANE CLOSURE - THREE LANE ROADWAY
NOT TO SCALE
-Puhllahed PSO(TC) Work Zone Traffic ControllWITC-14) Intersection Lane Closure - Three Lae RoadwaylTC-14Agn
RsaION 51AIE FED.AID PROJ.NO.
Hp,
WASH
JOB NUMi9ER
CONTRACT" NO, LOCATION NO.
REVISION
I DATE I BY
DATE
pax
NOTES
CHANNELIZAATION DEVICE
SPACING feed_
MPH TAPER TANGENT
50/70 40 80
35145 1 30 60
25i30 1 20 40
1 RECOMMEND EXTENDING DEVICE TAPER (Ll3) ACROSS SHOULDER
2 IF A SIGNAL IS PRESENT, IT SHALL BE SET TO "RED FLASH MODE"
OR TURNED OFF DURING FLAGGING OPERATIONS
3. FOR SPEED LIMIT OF 30 MPH OR LESS USE SIGN W1-3 IN LIEU OF
SIGN W14,
4 MAINTAIN A MINIMUM OF ONE ACCESS POINT FOR EACH BUSINESS
WITHIN WORK AREA LIMITS
5 ALL SIGNS ARE BLACK ON ORANGE UNLESS OTHERWISE DESIGNATED.
PIQ# 'I
Adft PLAN REF NO
VIIAF TC'14
Washington State SHED
Department of Transportation _ Or-
DA71 TRAFFIC CONTROL PLAN SHEETS
P.E STAMP BOX
0 1" 2"
TWO INCHES AT FULL SCALE.
IF NOT, SCALE ACCORDINGLY
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SHEET: TC-1 4
OF: 20
JOB NO.: 15465
DWG: TC-14