TC-1 (One Lane, Two Way Traffic Control with Flaggers)FILE NAME
TIME
DATE
DESIGNED BY
ENTERED BY
CHECKED BY
PROJ. ENGR.
REGIONAL ADM.REVISION DATE BY
SHEET
OF
SHEETS
Washington State
Department of Transportation
P.E. STAMP BOX P.E. STAMP BOX
DATE DATE
LOCATION NO.CONTRACT NO.
JOB NUMBER
REGION
NO.
STATE FED.AID PROJ.NO.
WASH
PLOTTED BY
PLAN REF NO
FletcCo
9/18/2014
1:16:53 PM
S:\Design R P& S\4-Standards\2-Plan Sheet Library\01-Published PSL\(TC) Work Zone Traffic Control\W(TC-1) One Lane, Two Way Traffic Control with Flaggers\TC-1.dgn
Plot 1
TC1
TRAFFIC CONTROL PLAN
LEGEND
W20-1
48"
48"
AHEAD
WORK
ROAD
48"
48"
TO STOP
PREPARED
BE
W20-7B
48"
48"
W20-4
AHEAD
ROAD
ONE LANE
48"
48"
W20-7A
W20-1
48"
48"
AHEAD
WORK
ROAD
48"
48"
W20-4
AHEAD
ROAD
ONE LANE
48"
48"
TO STOP
PREPARED
BE
W20-7B
48"
48"
W20-7A
ROADWAY CONDITIONS.
(2) THIS SPACING MAY BE REDUCED IN URBAN AREAS TO FIT
INTERSECTIONS AND DRIVEWAYS.
(1) ALL SPACING MAY BE ADJUSTED TO ACCOMMODATE
URBAN STREETS
35 / 40 MPH
25 / 30 MPH
45 / 55 MPH
60 / 65 MPH
48"
48"
W20-7A
W20-1
48"
48"
AHEAD
WORK
ROAD
48"
48"
W20-4
AHEAD
ROAD
ONE LANE
48"
48"
TO STOP
PREPARED
BE
W20-7B
LONGITUDINAL BUFFER SPACE = B
30 35 40 45 50 55 60 65 70
250 305 360 425 495 570
BUFFER DATA
200
THE WORK AREA.
MAY BE A WORK VEHICLE STRATEGICALLY LOCATED TO SHIELD
BUFFER VEHICLE ROLL AHEAD DISTANCE = R
-
50/65
TAPER TANGENT
10 TO 20
NOTES:
1.
100 FEET MAX.
TO
30 FEET MIN.
SPEED (MPH)25
155 645
TRANSPORTABLE ATTENUATOR
MANUFACTURERS RECOMMENDATION.
WEIGHT SHALL BE IN ACCORDANCE WITH THE
MINIMUM HOST VEHICLE WEIGHT 15,000 LBS. THE MAXIMUM
LENGTH (FEET)
PROTECTIVE VEHICLE
REQUIRED
DISTANCE
NO SPECIFIED
MPH
SPACING (FEET)
CHANNELIZATION DEVICE
35/45
25/30
10 TO 20
10 TO 20 40
60
80
SIGN SPACING = X (1)
RURAL HIGHWAYS
RURAL ROADS
RURAL ROADS & URBAN ARTERIALS
RESIDENTIAL & BUSINESS DISTRICTS
RURAL ROADS, URBAN ARTERIALS,
25 MPH OR LESS »¿100’
»¿200’
»¿350’
»¿500
»¿800
2.
3.
4.SEE SPECIAL PROVISIONS FOR WORK HOUR RESTRICTIONS.
ADDITIONAL DETAILS.
FLAGGING STATIONS. SEE THE STANDARD SPECIFICATIONS FOR
NIGHT WORK REQUIRES ADDITIONAL ROADWAY LIGHTING AT
SHOULDER IS RECOMMENDED.
EXTENDING THE CHANNELIZING DEVICE TAPER ACROSS
ALL SIGNS ARE BLACK ON ORANGE.
WITH FLAGGERS
ONE-LANE, TWO-WAY TRAFFIC CONTROL
NOT TO SCALE
IN
T
E
R
S
E
C
T
I
N
G
R
O
A
D
W
A
Y
40 MPH OR LESS)
W20-7B (OPTIONAL IF
40 MPH OR LESS)
W20-7B (OPTIONAL IF
40 MPH OR LESS)
W20-7B (OPTIONAL IF
PROTECTIVE VEHICLE
CHANNELIZING DEVICES
TEMPORARY SIGN LOCATION
FLAGGING STATION
300’
50’ TOX
AREA
WORK
XMIN.
6 DEVICE
50’ TO 100’
BRMIN.
6 DEVICE
50’ TO 100’
XXXX
X X X
X
X
X