Traffic Controls for Street Construction & Maintenance Operations
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CITY OF SALINA
SALINA, KANSAS
TRAFFIC
CON T R 0 L S
~,
STREET
FOR
CON S T R U C T ION
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M A I N TEN A N C E
o P f RAT ION S
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FOR -THE
CITY OF SALINA, KANSAS
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City Engiriee,,",~ment
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TRAFFIC
CONTROLS
STREET
FOR
CON S T R U C T ION
AND
M A I N TEN A N C E
OPE RAT ION S
..
FOR THE
CITY OF SALINA, KANSAS
PREPARED BY
CITY ENGINEERING OEPARTMENT
Adopted by the City Commission and approved by
on thi s
day of
MAYOR
, 19
.
I
CONTENTS
SECTION PAGE
I NEED AND PURPOSE OF MANUAL 1
II PROCEDURE FOR OBTAINING PERMISSION 1
TO WORK IN CITY STREETS
III PRECONSTRUCTION CONFERENCE 2
IV DETOURS 2
V TRAFFIC CONTROL DEVICES AND THEIR
USES: 3
'1. General Requirements 3
2. Traffic Cones 4
3. Barricades 4
- 4. Vertical Hazard Marker 5
5. L i ghti ng Devi ces 6
a. Floodlights 6
b. Barricade Warning
Lights 6
c. Steady Burning
Electric Lamps 7
6. High Level Warning Lights 8
7. Flagman or Officer 8
8. Signs 9
VI PEDESTRIAN PROTECTION IN CONSTRUCTION 9
AREAS
VII SURVEYORS 10
.
ILLUSTRATIONS
PAGE
MAJOR. STREET SYSTEM 12
STANDARD TYPE BARRICADE 13
METHOD OF MOUNTING SIGNS OTHER THAN ON POSTS 14
.
MISCELLANEOUS EQUIPMENT FOR TRAFFIC CONTROL 15
TRAFFIC SIGN LISTING 16
TRAFFIC SIGNS 17-18
TYPICAL APPLICATIONS OF TRAFFIC CONTROL DEVICES 19-30
.
I. NEED AriD PURPOSE OF ~lANUAL
Problems of traffic control occur when traffic must be moved
through or around road or street construction, maintenance opera-
tions, and utility work. No single standard sequence of signs or
other control devices can be set up as an inflexible arrangement
for all situations due to the variety of conditions encountered.
The following treatment of signs, signals and markings for ~
street and alley construction and maintenance work provides guide ~ d
lines to be applied as a City of Salina standard on all major~
arterial and collector streets within the City. Safety precaution
requirements within the limits of any other street or right-of-way
shall meet the requirements described in Section 32-259 City of
Salina, Kansas Code.
The purpose of the manual is to set forth basic principles,
uniform procedures and prescribed standards for all agencies to
follow in the design, application, installation and maintenance
of all types of traffic control devices required for street and
alley construction and maintenance operation. Since it is not
possible to prescribe detailed standards of application for all
the situations that may conceivably arise, minimum standard and
illustrations of application are presented for some of the more
common situations. "Particular situations not covered in the
manual, must be dealt with in conformance with general provisions
and principles set forth herein. --t
These principles, procedures and standards conform as Cl0S~ '
as practicable to the"Manual on Uniform Traffic Control Devices
(1971), and are aimed at the protection of the driving and walking
public and workman. The minimizing of both the inconvenience to
the public, economic losses and the maintaining of public good
will are also prime principles. ~
" The term "agency" as used throughout this manual refers to ~ I! ^f
any organization, public or private, doing work on any city street ^"~~;~
right-of-way. " C~ W'"-V-
" tV
II." PROCEDURE FOR OBTAINING USE OF STREET PERMIT TO WORK
IN CITY STREET
Whenever it is necessary to work within the limits of any
public street or alley right-of-way within the limits of the City
of Salina, Kansas, it is first required to obtain a permit to work
in such right-of-way. All permits shall be issued by the City
Engineers office in accordance to Article VII through XII, Section
32, Salina Code.
1
.
The authorization from the City Engineer to work in any street
must be applied for by a representative of the agency doing the workf
at least twenty-four (24) hours prior to work being initiated;. --12--,L-
~ ~~
. W~it i~ecessary to work in the traffic or parking . .
lane portion of the street right-of-\'/ay, (curb line to curb line)
of those streets shown on the major street system map found on
page 12 of this manual, it will be necessary for the agency to
comply with the safety standards of this manual.
III. PRECONSTRUCTION CONFERENCE
The City Engineer shall have the responsibility of outlining
those projects which are large enough in scope to warrant a pre-
construction conference. Said projects shall be designated as
soon as possible after the project initiation and preconstruction
conference will be scheduled in advance of street closure.
For those large projects, a conference between the Contractor,
City Engineer, Traffic Engineer, Street Maintenance, Police Depart-
ment, Fire Department and agency involved will generally be necessary
before work on street right-of-way will be authorized.
IV. DETOURS
The determination of detour needs for major construction pro-
jects shall be made at the preconstruction conference. The Engineering
Department will determine the detour route with the concurrence of
the Street Maintenance Department. During normal working hours,
emergency detour routes may be requested by telephoning the City
Engineering Departr.ent at 827-9481. On other than normal working
days, emergency closing must berepor~tifYing the officer
in charge at the Police Departmen~~
When streets are ready for reopening, the City Engineer's
office must be notified. When the reopening of a street involve
discontinuation of detours, the Engineering Department must be
notified by the agency twenty-four (24) hours prior to reopening. J~ ~
The Engineering Department will follow through and notify the ~I
Fire and Police Departments that the street is open.
The following telephone numbers may also prove useful:
City Engineer and Traffic Engineer
Street Maintenance
Traffic Control Maintenance
Water Department
Fire Department
Police Department
Kansas P0I1er & Light Co.
827-9481
823-6621
825-0171
827-9625
823-2571
825-4691
823-6311
7
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2
V. TRAFFIC CONTROL DEVICES AND THEIR USES
.
1. GENERAL REOUIREMENTS
The agency working on a project shall provide and maintain
all necessary control devices except signs prohibiting turns or
parking, signs regulating speeds or stop signs. These exceptions.
will be provided and maintained by the City Traffic Division,
which must have at 1east.a forty-eight (48) hour notice to pre-
pare and install the required signs.
All traffic control devices used on street construction or
maintenance work shall conform to the applicable specifications ~ ~
of this manual and the Manual on Uniform Traffic Control Devices
(1971), U.S. Department of Transportation, Federal Highway
Administration or as approved by the City Traffic Engineer.
Traffic control devices shall be set up prior to the start
of construction or maintenance operations and shall be properly
maintained during the time such conditions exist. They shall
remain in place only as long as they are needed and shall be
removed immediately thereafter. When operations are performed
in stages, only those devices that apPly to the condition present
during the stage in progress shall be in place. Signs such as
"Survey Crew" or "Flagman Ahead" shall be covered or placed out
of view of traffic when they do not apply. Existing traffic signs
and control devices' must remain in place until construction or
maintenance activities are started. The City Traffic Division
will remove and replace such signs as needed. The contractor will
be responsible for any damage resulting from failure to maintain
or protect such devices.
All barricades and sign supports shall be neatly constructed
and they shall be repaired and cleaned or repainted as needed to
maintain their appearance.
Adequate traffic control devices must be used whenever a
motorist is required to change his path of travel.
Special care shall be taken to see that weeds, shrubbery,
construction material or equipment and spoil are not allowed to
obscure any signs, flags, barricades, or vehicles parking in legal
parking zones. .
If stored in the street, material taken from excavations or
new material to be used for replacement should be placed on that
side of the excavation being approached by traffic. Such material
is less hazardous to moving traffic than an open excavation would.
be.
Temporary stops (for example: K. P. & L. replacing a lamp
globe or City Traffic Division replacing a traffic light bulb)
shall be exempt from providing advance warning signs, lights and
barri cades.
3
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Work areas shall be outlined with cones when it is necessary
to divert a traffic lane. All mobile equipment shall be equipped
with yellow flashers to provide warning to moving vehicles and
safety provisions for the agency's crew. .
During hours of darkness, traffic control devices must be
reflectorized or illuminated as further specified in the following
information regarding each of these devices.
Typical application of traffic control devices is shown on
Page 19 through 30.
2. TRAFFIC CONES
Cones of various configurations are commercially available.
The~ shall have a broadened base and a minimum height of eighteen
(18) inches. Cones shall be fluorescent orange in color and be
made of a material to withstand impact without damage to themselves
or to vehicles. Cones with ballasted bases are recommended to
alleviate the problem of being blown over or displaced. Cones of
the larger size should be used when speeds are relatively high or
wherever conspicious guidance is necessary. Cones should be kept
~lean and checked frequently for location as they are. frequently
knocked over. Traffic cones are effective for daytime use only.
A lighting device such as is discussed in Section V shall be used
at night. When traffic cones are used to divert a traffic lane,
spacing shall not exceed ten feet or a taper of one foot of road-
way width for each ten feet of roadway length. Longer tapers are
needed as speed increases. .
3. BARRICADES
Barricades are especially valuable for out1ininq the excavation
or construction area in the street. Barricades mounted on posts
set firmly in the ground are justified for major construction work,
while movable barricades are appropriate where the project is of
short duration or where the passage of equipment or of local traffic
must be provided.
Each barricade rail shall be marked with alternate orange and
white or black and white stripes, six inches in width at an angle
of 45 degrees from vertical, slanting downward toward the side which
traffic is to pass. The orange and white and black and white mark-
ings shall not be intermixed in the same installation or area. All
barricades used at night shall be effectively ref1ectorized. All
barricade components with exception of guard rails shall be pred-
ominantly white in color. For increased emphasis at night, lights
or flashers shall be mounted on barricades.
A barricade should never be
without advance warning devices.
advance of an obstruction can be
around the obstruction.
placed in the line of traffic
Type I barricades placed in
used effectively to divert traffic
4
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,The standard barricade shall be one of three types: Type I,
II or III as herein described.
A Type I barricade shall consist of a single horizontal rail
of nominal eight (8) to twelve (12) inch width, with its top edge
thirty-six (36) to forty-two (42) inches above the roadway. This
type is normally six (6) to eight (8) feet long and is intended
for use where the hazard is relatively small or to delineate a
restricted roadway.
A Type II "A" frame barricade shall consist of two horizontal
rails of nominal eight (8) to twelve (12) inch width spaced verti-
cally, at approximately twenty (20) inches center to center, such
. that the upper edge of the top rail shall be a minimum of three
(3) feet above the roadway. The width of the barricade shall be
between three (3) and four (4) feet.
A Type III barricade shall consist of three horizontal rails
of nominal eight (8) to twelve (12) inch width spaced vertically
at approximately twenty (20) inches center to center. The upper
edge of the top rail shall be a minimum of five (5) feet above
the roadway. This type barricade shall have a minimum length of
three (3) feet and may be as long as required. Type III barricades
of extensive length may consist of a series of short barricade units
set end to end. The Type III barricade is the type normally req-
uired for major operations such as indicating the closure of a
major street.
In some instances, barricades offer an advantageous facility
for the erection of signs such as "Road Closed" and "Detour Arrow".
Such signs, when used, shall be centered no less than three (3)
feet above the pavement elevation.
The only writing on the barricade shall be the agency's name
in black letters which shall appear in a readily visible location.
If located on the panel face, the legend shall not exceed a length
of one (l)foot or exceed the hei ght . of" two (2) inches in order
to preserve the effectiveness of the stripes.
In advance of the construction or maintenance area, even where ~
no part of the roadway is actually closed, wing barricades are r
Type III barricades erected on the shoulder of one or both sides
of the pavement to give the sensation of a narrowing or restric
roadway. If used in a series, they should start at the out edge
of the shoulder and be brought orogressively closer to pave-
ment, leaving a minimum lateral clearance of four (4 eet. Wing
barricades may be used for mounting advance warning signs, guide
signs or lighting devices.
4. VERTICAL HAZARD MARKER
All vertical hazard markers shall be rectangular in shape
with a six (6) to twelve (12) inch width and a twe~ty-four (24)
to thirty-six (36) inch height. They shall be mounted on a sub-
stantial support with the bottom edge of the marker thirty-six
(36) to forty-two (42) inches above the roadway. Each vertical
5
.
hazard marker used in the right-of-way between the hours of sunset
and sunrise shall have an approved operating flasher mounted above
it. Each side of the hazard marker shall bear alternating three
(3) to six (6) inch reflectorized orange and white stripes or
black and reflectorized white stripes slanting downward at 45
degrees toward the side that traffic is to pass. Orange-white
and black-white stripted hazard markers shall not be intermixed
at anyone construction site.
Vertical hazard markers are used to divide the opposing
streams of traffic, divert the traffic lane, or outline the edge
of a hazard along the roadway. When a vertical hazard marker is
used to divide opposing flows of traffic, both sides of the marker
shall be properly striped for the approaching traffic. When
vertical hazard markers are. used to divert traffic lanes, they
shall be spaced not less than twenty (20) feet apart on a taper
not greater than one (1) foot of roadway width for each ten (10)
feet of roadway length. Longer tapers are required on those
roadways having higher vehicular speeds.
.
5. LIGHTING DEVICES
Construction and maintenance activities very often create
conditions on or near the traveled way that are particularly
hazardous at night. Therefore, it is desirable and often nec-
essary to supplement reflectorized signs, barriers and channel-
izing devices with the various types of lighting devices described
in the following paragraphs.
Floodlights, flashing lights and steady burning lamps are the
types most commonly used. The use of open flame light sources
such as kerosene torches or flare pots are permissible.
a. Floodlights - Floodlights have a limited but important
function on some construction projects. Construction
activities conducted during the hours of darkness under
those circumstances requiring the use of manual traffic
control (flagman) should have the flagman station illum-
inated to assure the safest possible conditions. Flood-
lights in such areas should be located with care so as
not to glare in the eyes of the motorist.
b. Barricade Warning Lights - Barricade warning lights are
portable, enclosed and emit a lens-directed yellm~ light.
Dependent upon their application, they may be used in
either a steady burn or flashing mode. Portable supports
for barricade warning lights (Page 15 ) shall provide
a minimum height of thirty-six (36) inches to the bottom
of the lens. These supports are not intended for use
as standard barricades.
Three types of barricade warning lights may be used; the
specifications pertinent to each type are given in Table
1 and their individual application is described in the
following paragraphs.
6
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T~pe A (Low Intensity Flashing Warning Lights) - These
llghts are intended to warn the driver that he is pro-
ceeding in a dangerous area. They are commonly mounted
on separate portable supports on Type I or II barricades
or on vertical channelizing devices.
Type B (High Intensity Flashing Warning Lights) - These
lights are normally mounted on advance warning signs or
on independent suoports in advance of the construction .
area.
They may also be mounted on Type I barricades, signs or
other supports within the construction area to emphasize
extremely dangerous site conditions. These lights are
effective during both daytime and nighttime hours and
should, therefore, operate twenty-four (24) hours per
day.
~ (Steady Burn Lights) - These lights shall be
usea-to delineate the traveled way through and around
obstructions in a construction or maintenance area.
They shall also be used to delineate the edge of the
traveled way on detour curves, lane changes, lane
closures and on other similar conditions.. Steady burn
lights placed on longitudinal barricades are effective
in delineating the proper vehicle path through stage
construction areas which require changing patterns of
traffic movement.
TABLE 1
Barricade Warning Lights
Specification Item
A
(Low Intensity)
Type
B
(High Intensity)
1
7"
55-75
8%*
35 Candelas**
C
(Steady Burn)
1 or 2
7"
Constant
Constant
Directional Lens Faces 1 or 2
Minimum Lens Diameter 7"
Flash Rate (Flasher/Minute) 55-75
Flash Duration 10%*
Minimum Effective Intensity 4.0 Candelas**
Minimum Beam Candlepower
Hours of Operation Dusk to Dawn
24 hr/day
2 Candles**
Dusk to Dawn
* length of time that instantaneous intensity is equal
to or greater than effective intensity
**these values must be maintained within an elliptical
pattern go on each side of the vertical axis, and 50
above and below the horizontal axis
.....
.....
.....
.....
c. Steady Burning Electric Lamps - Steady burning electric
lamps shall be of low wattage and emit a steady yellow
7
light. These lights may be used in lieu of the Type C
barricade warning lights described above.
.
6. HIGH LEVEL WARNING DEVICE
All high level warning devices shall be at least nine (9) feet
tall and display three (3) or more fluorescent orange flags. The
flags shall be eighteen (18) inches square and should be substan-
tially supported to resist overturning by winds.
One high level warning device shall .be used for each blocked
traffic lane. The high level warning is required for all temporary
work conducted in the roadway during the daylight hours. A flasher
shall be attached to the warning device during the hours of dark-
ness. High level warning devices may be attached to a service
vehicle or placed in advance of a project. The high level device
shall be placed behind traffic channelization and near the center
of the blocked traffic lane.
7. FLAGMAN OR OFFICERS
Prior to contract letting, the agency will make an attempt
to determine the extent to which manual traffic control is required.
On large projects, the extent of manual traffic control required
will be determined at the preconstruction conference. The contractor
must provide the flagman for such control if deemed necessary by
the engineer on the job or the City Traffic Engineer. Manual
traffic control is mandatory at locations where equipment is inter-
mittently blocking a traffic lane or where only one traffic lane
is available for two directions of travel. One flagman is required
for each direction of traffic affected. Flagmen shall wear a highly
visible orange vest, reflectorized for nighttime use, and shall
display a flag or STOP-SLOW paddle. .
The flag is the most common signaling device used during day-
light hours. However, a paddle bearing a STOP-SLOW message may
also be used. Flags shall be a minimum of twenty-four (24) by
twenty-four (24) inches, made of good grade red material and
securely fastened to a shaft approximately three (3) feet long.
The free edge of the flag shall be weighted so that it will hang
vertically in heavy winds.
Sign paddles shall be at least twenty-four (24) inches in
diameter and bear a six (6) inch high legend. The STOP face shall
be octagonal in shape and have a red background with white legend
and border. The SLOW face shall be diamond shaped and have an
orange background with black legend and border. When used at night,
both sides of the paddle shall be reflectorized.
Instruction in proper use of hand and arm signals is available
by telephoning the Traffic Engine r, 827-~48l.
.
The availability of cit for assistance in construc-
tion traffic work is generally limited to emergencies only as their
services are required elsewhere. Off-duty officers may be employed
8
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directly by ,the contractor to maintain traffic control and are
obtained by calling the Police Traffic Division, 825-4691.
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8. SIGNS
Street construction and maintenance signs fall into the same
three categories as do other traffic signs; namely, regulatory,
warning and guide signs. Regulatory signs located in construction
and maintenance areas shall adhere to the same shape, size and
color standards required for all highway regulatory signs. Special
construction and maintenance signs follow the basic standards
for all highway signs as to shape. However, guide signs and warn-
ing signs located in construction areas shall have a black legend
on an orange background. Existing yellow background warning signs
and white background guide signs already in place within existing
construction areas may remai n in use. The "General Requi rements"
section of this manual outlines the signing responsibilities. Table
II and page 17 through 18 illustrate some of the different types
of signs used in construction areas as well as their respective
minimum dimensions. Any variation with respect to these sign types
and/or their minimum dimensions must be approved by the City Traffic
Engineer. If there is any question whether the minimum size will
be sufficiently conspicuous or legible, enlarged signs should be
used; for example, forty-eight (48) inch construction approach
warning signs should be used on streets having higher vehicular
speeds or volumes.
Signs bearing special legends may be used only upon approval
of the City Traffic Engineer; The color, size, shape, lettering
and 'ref1ectorizing of any special signs must conform to the prin-
ciples outlined in the Manual on Uniform Traffic Control Devices
(U.S. Department of Transportation, Federal Highway Administration, .
1971) .
It is especially important that advance warning signs be used
in conjunction with any barricading and/or channelization since
information presented by such signs materially assists the motorist
in following the required traffic arrangements.
VI. PEDESTRIAN PROTECTION IN CONSTRUCTION AREAS
In addition to the pedestrian protection requirements set
forth in the City of Salina Building Code, pedestrian walkways (of
the fence and canopy type shall also include the following warning
devices:
1. A minimum of three (3) flashing yellO\~ lights shall be installed
on the traffic approach end of the pedestrian walkway. Two of these
lights shall be mounted on the street side of the barricade; one
at a level of approximately railing height and the other approxi-
mately eight (8) feet above the pavement. The third light shall
9
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be mounted on the opposite side of the pedestrian walkway, approx-
imately eight (8) feet above the pavement surface.
2. The traffic 'approach end of the walkway shall have a fixed
handrail extending 'from the curb to the outermost side of the
pedestrian walkway. The area from the rail to the pavement shall
be covered and marked with six (6) inch alternating orange and
white or black and white hazard markings, sloping downward at
45 degrees toward the side on which traffic must pass. B1ack-
white and orange-white striping, shall not be intermixed at any
one walkway location.
3. A high level warning board with minimum height of two (2)
feet and a width equal to that of the walkway shall be mounted
above pedestrian walkways on all traffic approaches. The warn-
ing board shall be striped with six (6) inch alternating orange
and white or black and white hazard markings, sloping downward
at 45 degrees toward the side on which traffic must pass. B1ack-
white and orange-white striping shall not be intermixed at any
one walkway location.
4. Flashing yellow clearance 1i9hts
imate1y railing height on twenty (20)
traffic side of the barricade.
shall be mounted at approx-
foot centers along the
5. A continuous bumper guard rail consisting of one 21X14"
board shall be mounted on the street side of the structure. The
lower edge of the guard rail shall be ten (10) inches above the
pavement.
.
VII. SURVEYORS
.
The surveyor;' as a pedestrian in the street, may be obscured
from motorist's vision by the presence of a single car. The higher
the traffic volume, the greater the chance of an accident. The
peak hourly traffic flow in Salina is from 7:00 A.M. to 9:00 A.M.
and from 4:00 P.M. to 6:00 P.M. During these hours, surveying
work shall not be allowed at signalized intersections or arterial
streets except during emergency conditions.
The use of advance warning signs, high level warning devices,
traffic cones or barricades should provide adequate protection
for the surveyor in most instances. Normally, a surveyor's work
would not require the closing of an entire travel lane; but rather,
would require only a shift of traffic to one side of the travel
lane. This shift can be made with cones or barricades extending
a minimum of thirty (30) feet for each foot of shift. An advance
warning sign facing approaching traffic shall be located at the
start of each transition. High level warning devices are extremely
valuable for survey work since they may be seen over the tops of
preceding vehicles. A high level warning device shall be used
whenever an instrument is set up in the street or when a range
pole is set up in a signalized intersection.
10
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Surveyors working in the street~Reijld wear fluorescent orange
vests. Perforated or knit vests are commercially available which
alleviate the comfort problems associated with other types of vests.
.
11
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MOUNTING SIGNS
ON POSTS
14
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ORANGE a WHITE
OR
FLASHER~ BLACK a WHITE
i~) r STRIPES
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HIGH LEVEL WARNING
. DEVICE
PORTABLE FLASHER SUPPORT
e" LENS
ORANGE a WHITE
OR
BLACK a WHITE
STRIPES
24'/36"
.
36"/42"
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FLASHER
TRAFFIC CONE
FLUORESCEN T
ORANGE
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VERTICAL HAZAR D
MARKER
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. MISCELLANEOUS EQUIPMENT
FOR TRAFFIC CONTROL
.. 15
.
.
:io--
TABLE II
TRAFFIC SIGNS
WARNING - Diamond, Black letters on Orange Background
MINIMUM SIZE
W20-2
W20-3
W20-4
W20-5
W20-7
W21-1
W21-2
W21-4
W21-6
W8-1
W8-2
W12- 1
W6-3
Detour Ahead
Road Closed Ahead
One lane Road Ahead
left (Right) lane Closed Ahead
F1 agman Ahead
Men Working .
Fresh Oi 1
Road Work Ahead
Survey Crew
Bump
Dip
Double Arrow
Two-Way Traffi c
(used with 24"X18" legend panel)
Flagman Paddle SLOW
36"X36"**
36"X36"**
36"X36"**
36"X36"**
36"X36"**
30"X30"
30"X30"
36"X36"**
30"X30"
30"X30"
30"X30"
24"X24"
36"X36"**
24" Diameter
REGULATORY - Standard Shape and Color
.
*Rl-1
*R2-1
*R7-1
*R3-la
*R3-2a
*R3- 5
*R4-7a
*R4-8a
*R6- 1
R11-2
Rll-3
Stop
Speed limit
No Parking Anytime
No Ri ght Turn
No left Turn
Right Turn Only
Keep Right with Arrow
Keep left with Arrow
One Way
Road Closed
Road Closed - local Traffic Only
Flagman Paddle STOP
30"X30"
24"X30"
12"X18"
24"X30"
24"X30"
30"X36"
24"X30"
24"X30"
36"X12"
48"X30"
24" Diameter
GUIDE -' Rectangular, Black letters
M4-10R(l)
M4-92(l)
*
**
.
Detour Arrow (Orange Arrow, Black Back9round)
Detour (Black Arrow, Orange Background)
48"X18"
30"X24"
Normally furnished by the City Traffic Department.
48-inch work approach warning signs shall be used pm streets
having higher vehicular speeds or volumes.
16
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CONSTRUCTION AREA WARNING SIGNS
.-
.
.
W20-2
36"x 36"
W20-S
36'k 36"
.
W21-2
30~ 30"
W20-3
36'lc 36"
W20-7
36"x 36"
W21-4
36Y(36"
WS-2
3O'k30"
W6;;3 "
36x36
TWO WAY
PLAQUE
TRAFFIC 24'k IS"
.
17
W20-4
36'X36"
W21-1
3O'k 3d'
W21-6
3O'X30"
W12-1
24'lc24"
~
REGULATORY SIGNS
.
SPEED NO KEEP
. LIMIT ~
LEFT ,
50 TURN
RIGHT
R~-I R3-2o ONLY R41-1b
24 k 30" 24'X 30" R3-5 2 x30"
30\ 3f1'
Jf:r~::~
R6-1
36"xI2"
ROAD ROAD
CLO SED
CLOSED LOCAL TRAFFIC
ONLY
RII-2 :, RII-3
. 48'k30" 48"x 30"
GUIDE SIGNS
En
M4-iOR
48'k JS"
DETOUR
~.
M4 -9~
FLAGMAN PADDLES 241'x IS"
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