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Page 326 SECTION 634 TRAFFIC CONTROL 634.1 DESCRIPTION Page 326
SECTION 634 TRAFFIC CONTROL
634.1 DESCRIPTION
This work consists of furnishing, installing and maintaining required traffic control devices.
634.2 MATERIALS
Metallic barrels or drums will not be allowed.
Traffic control devices shall conform to the requirements of Section 984, the MUTCD, and
Standard Highway Signs, issued by FHWA.
Designated construction and maintenance work zone
traffic control warning devices shall be sheeted with micro-cube corner prismatic fluorescent orange
material. This shall include all black on orange construction and maintenance work zone traffic
control warning signs (all W and G series signs), object markers, and delineators. There are
exceptions for Type I, II, and III barricades, vertical panels, and detour signs which shall be sheeted
with micro-cube corner prismatic nonfluorescent orange and white material or Type III high
intensity sheeting meeting the requirements of ASTM D 4956.
Paint used for temporary pavement marking shall be a commercial grade traffic paint manufactured
for use in marking pavements.
Glass beads shall be used to reflectorize the temporary traffic paint. The glass beads shall conform
to the requirements of Section 981.
634.3 CONSTRUCTION REQUIREMENTS
A.
General: The Contractor shall furnish, install and maintain required pavement marking
material, barricades, lighting devices, flags, channelizing devices, signals, signs, markers, and
delineators. The Contractor shall provide a sufficient number of flaggers and take necessary
precautions for protection of the workers, work area and the safety of the traveling public.
Standards for flaggers and flagging practices shall conform to Part VI of the MUTCD. The
Contractor shall provide each flagger with a copy of the "Traffic Flagging Handbook"
booklet. These booklets are available from the Department.
The Contractor shall furnish certified flaggers to perform project traffic control. The
minimum age for flaggers shall be 18 years old. Flagger training and certification is available
at Department Area offices and from the Associated General Contractors (AGC). All
flaggers shall complete a flagger training course and pass a written test to become certified.
All flaggers shall be certified prior to flagging on the project. Flaggers shall carry proof of
certification while flagging on Department projects.
All flaggers are required to wear a vest, shirt, or jacket that is yellow, orange, strong yellow
green, or a fluorescent variation of these same colors. A strong yellow green, orange, or
fluorescent strong yellow green hard hat, hard hat cover, or cap should be worn to increase
visibility to approaching traffic.
TRAFFIC CONTROL
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The vest, shirt, jacket, hard hat, hard hat cover, and cap shall be retroreflective when used
after dark. Flagger work stations shall be illuminated after dark.

Flaggers shall be properly equipped with a STOP/SLOW sign for the control of traffic. The
sign should be mounted on a staff from five to seven feet long, from the bottom of the sign
to the ground. All devices and their use shall comply with Part VI of the current MUTCD,
unless otherwise specified in this provision.
All traffic control devices shall be kept in proper position, clean, and legible at all times.
Damaged devices shall be replaced without undue delay. The Contractor shall make
inspections after dark to verify that the overall traffic control system is adequate and that
all devices are legible at night.
Shadow vehicles shall be used for brooming operations unless otherwise directed. They
shall be a four wheel motor vehicle with a flashing amber light and shall have a "ROAD
MACHINERY AHEAD" sign mounted in a prominent position, visible to approaching
traffic. The broom shall be equipped with a flashing amber light.
Barricades, delineators, vertical panels, cones, drums, and tubular markers used to separate
opposing traffic shall be bi-directional.
Traffic control devices shall be promptly removed or covered when the need for such
devices no longer exists.
Warning lights shall be six to eight inches (150 mm to 200 mm) in diameter and operate
during hours when the hazard or regulation exists. Continuous operation 24 hours a day
is required when the hazard or regulation is in existence throughout this period.
When used in conjunction with signs, the warning light shall not be located within the face
of the sign, nor more than 12 inches (300 mm) above the top of the sign. When used with
barriers and channelizing devices, the warning light shall be at least three feet (900 mm) and
not more than six feet (1800 mm) above the pavement.
B.
Temporary Pavement Marking:
Temporary pavement markings shall be maintained in good condition until the permanent
striping is in place, or until final acceptance of the project.
1.
Temporary Pavement Marking Tape Type 1 will generally be limited to
temporary striping and temporary marking on pavement to be removed or covered
with an additional lift or for other uses that do not require removal of the tape. It
may also be used and subsequently removed on tangent sections along normal lane
line locations.
2.
Temporary Pavement Marking Tape Type 2 is required on all temporary lane
transitions and tapers involving pavement that is the final driving surface. TRAFFIC CONTROL
Page 328
3.
Temporary Centerline and No Passing Zones: All roadways open to traffic
(including newly paved and roto milled surfaces, asphalt surface treatment, seal,
prime, and tack coats) shall have temporary dashed centerline markings, no passing
zone markings, and applicable lane lines placed prior to nightfall. Interstate
highways shall also be marked with edge lines. All markings shall be placed prior
to nightfall.

Unless otherwise shown on the plans, centerline and the applicable lane lines may
be temporarily marked by removable road markers, pavement marking tape, or
traffic paint
.
No passing zones may be temporarily marked by removable road markers, Do Not
Pass/Pass With Care signs, pavement marking tape, or traffic paint. Do Not
Pass/Pass With Care signs may only be used to delineate no-passing zones for 3
calendar days or less, or for longer periods on low volume roads (<750 ADT).
The material used to mark the no passing zone stripes shall be the same type of
material used to mark the temporary dashed centerline.
The pavement marking paint shall be applied at a minimum wet thickness of 15 mils,
equivalent to a dry thickness of 7 to 8 mils (0.381 mm, equivalent to a dry thickness
of 0.178 mm to 0.203 mm). Glass beads shall be applied on the wet paint line at a
minimum of

six pounds of glass beads per gallon of paint (0.720 kg of glass beads
per Liter of paint).
Restriping of temporary pavement markings to meet the intentions of this
requirement and to provide a quality retroreflective line shall be at the expense of
the Contractor with no additional cost to the Department. Sections to be restriped
shall be determined by the Engineer.
The material used to mark the no passing zone stripes must be consistent with the
material used to mark the temporary dashed centerline.
Roads with current traffic volumes of 750 ADT or more:
Do Not Pass/Pass With Care signs may be used to delineate no passing
zones for three calendar days. After three calendar days no passing zones
must be marked with temporary pavement marking tape, temporary road
markers, or traffic paint.
Roads with current traffic volumes of less than 750 ADT:
Do Not Pass/Pass With Care signs may be used to delineate no passing
zones for 14 calendar days. After 14 calendar days the no passing zones
must be marked with temporary pavement marking tape, temporary road
markers, or traffic paint. TRAFFIC CONTROL
Page 329
The Engineer will determine locations and limits of no passing zones in
accordance with Part III of the MUTCD.

C.
Materials for Temporary Pavement Marking: Temporary pavement marking tape,
temporary road markers, or commercial grade reflectorized pavement marking paint shall
be of the type specified.
Temporary pavement markings shall be of the color specified.
1.
Temporary Pavement Marking Tape shall be applied according to the
manufacturer's recommendations. Tape used for dashed centerline marking shall be
applied in four inches (100 mm) widths, four feet (1.2 meters) long at intervals of
40 feet (12 meters). A two foot (600 mm) stripe with a interval of 20 feet (six
meters) may be used for roadways with severe curvature. Solid stripes shall consist
of tape applied in four inch (100 mm) widths for the length specified.

2.
Temporary Road Markers shall be applied according to the manufacturer's
recommendations. Markers may be used in place of tape or paint and shall be
retroreflectorized.
In broken line segments, a group of three markers, evenly spaced a maximum of
three feet (one meter) apart, will represent the stripe. A solid stripe will be
represented by a five foot (1.5 meter) spacing. The group spacing will be measured
from center marker to center marker not exceeding 40 feet (12 meters).
On asphalt seal projects temporary road markers shall not be placed more than 24
hours prior to covering the inplace markings on the surface. The protective marker
covers shall not be removed until after all oil within two feet (600 mm) of the
markers has been applied and rolling has been completed.
3.
Painted temporary pavement mar