Judgment should always prevail in placement of the devices.
"worker ahead" signs or symbols may also be needed.
area. Conditions will vary; flag persons and advance warning
with traffic cones to delineate the work vehicle and/or work
(arrow boards, strobe lights) on work vehicles in conjunction
of other, more dominant devices, such as special lighting units
short duration work. Such shortcomings may be offset by the use
that simplified traffic control procedures may be warranted for
control is expanded. Considering these factors, it is generally held
motorists are affected is significantly increased as the traffic
devices. Also, since the work time is short, the time during which
the crew in setting up and taking down the traffic control
During short duration work, there are hazards involved for
short duration work occupies a location for 1 hour or less.
devices than to perform the work. According to the MUTCD,
for which it takes longer to set up and remove the traffic control
Short duration activities are generally considered to be those
proper work zone traffic control, but is not a standard.
pattern work zones. It is intended to illustrate the principles of
traffic control applications for two-lane, multilane, and moving
The handbook presents information and gives examples of
associated with construction, maintenance, and utility operations.
is to protect motorists, pedestrians, and workers from hazards
maintenance operations. The purpose of temporary traffic control
with particular emphasis on the short-term work sites typical to
Part 6 of the Manual on Uniform Traffic Control Devices (MUTCD)
for work zone traffic control. It presents the requirements of
The purpose of this handbook is to present basic guidelines
to traffic. Guide signs commonly show destinations, directions,
signs give notice of conditions that are potentially hazardous
restrictions and may not be used without permission. Warning
regulatory, warning, or guide. Regulatory signs impose legal
Signs used in work zone traffic control are classified as
FIVE PARTS OF A TRAFFIC CONTROL ZONE
ADVANCE WARNING AREA
TO EXPECT AHEAD
TELLS TRAFFIC WHAT
OF ITS NORMAL PATH
MOVES TRAFFIC OUT
FOR TRAFFIC AND
LETS TRAFFIC RESUME
PORTABLE SIGN SUPPORT
MAINTENANCE TRAFFIC CONTROL PLAN
ILLUMINATED FLASHING ARROW
HIGH MOUNTED INTERNALLY
TRAFFIC CONE TRAFFIC DRUM
BUREAU OF ENGINEERING AND CONSTRUCTION
CONNECTICUT DEPARTMENT OF TRANSPORTATION
Traffic Control during Maintenance Operations
Traffic control patterns:
work forces in the work area.
movement of traffic through work zones and enhance the safety of
situations. These guidelines shall provide for the safe and efficient
when and what type of traffic control patterns to use for various
The following guidelines shall assist field personnel in determining
to setting up a traffic control pattern.
Representative and the District Safety Advisor for assistance prior
the Engineer or Supervisor must contact both the District Traffic
situation not adequately covered by the typical traffic control plans,
with the typical traffic control plans contained herein is required. In a
Although each situation must be dealt with individually, conformity
lights and a trafficperson shall be used when required.
and the equipment can be contained within the shoulder. Flashing
emergency patrol type activity or when a short duration stop is made
Traffic control patterns will not be required when vehicles are on an
when it is necessary for equipment to occupy a travel lane.
operations such as painting, pothole patching, mowing, or sweeping,
Typical traffic control plans 19 through 25 may be used for moving
and parked vehicles.
provided, and this area shall be free of equipment, workers, materials,
When installing a traffic control pattern, a buffer area should be
shall be removed, covered, or turned so that they are not readable by
Any existing signs that are in conflict with the traffic control patterns
that the entire taper area can be seen by the motorist.
of the taper should be installed on a tangent section of roadway so
If a lane reduction taper is required to shift traffic, the entire length
adequate sight distance for approaching traffic.
the work area, the traffic control pattern shall be extended to provide
In the case of a horizontal or vertical sight restriction in advance of
command respect from the motorist.
Traffic control patterns shall be uniform, neat, and orderly, so as to
3. Exposure to hazards.
2. Duration of operation.
1. Speed and volume of traffic.
installation of traffic control devices shall be based on the following:
any part of a travel lane or shoulder. For each situation, the
a work operation requires that all or part of any vehicle protrudes onto
Traffic control patterns shall be used when
Placement of signs:
should be installed on both sides of the roadway.
roads), where the sight distance to signs is restricted, these signs
restricted. On directional roadways (on-ramps, off-ramps, one-way
signs may be installed on both sides of the highway if sight line is
as the work area. On multilane divided highways, advance warning
work area. Signs shall be installed on the same side of the roadway
allow motorists the opportunity to reduce their speed prior to the
Signs must be placed in such a position to
Shown on the Traffic Control Plans
Allowable Adjustment of Signs and Devices
shown on the traffic control plans cannot be achieved.
lengths shall only be used when the recommended taper lengths
closure based on the posted speed limit of the roadway. These taper
Table 1 indicates the minimum taper length required for a lane
sight line to the signing and safer traffic operations through the work
located significantly in advance of the work area to provide a better
The Engineer or Supervisor may require that the signing pattern be
the vertical and horizontal curvature of the roadway.
motorists, abutting property requirements, driveways, side roads, and
to the traffic control plans shall be based on safety of work forces and
signs and devices and to better control traffic operations. Adjustments
direction of the Engineer or Supervisor to improve the visibility of the
Adjustments to the traffic control plans shall be made only at the
traffic control devices depends on actual field conditions.
The proper application of the traffic control plans and installation of
should be installed as shown on these plans whenever possible.
spacing of signs and devices under ideal conditions. Signs and devices
The traffic control plans contained herein show the location and
TABLE 1 - MINIMUM TAPER LENGTHS
A SINGLE LANE CLOSURE
MINIMUM TAPER LENGTH FOR
180 FEET30 MPH OR LESS
POSTED SPEED LIMIT
Paving Operations on Highways - Work by Contractors
police, and municipalities.
prepared and distributed to the local papers, radio stations, state
Representative determines that it is necessary, a news release will be
held two weeks prior to the starting date. If the District Traffic
on-site meeting between the Department and the Contractor will be
When work hours on a particular project have been established, an
issues and may contact the Division of Traffic Engineering for
Representative will be available to assist field forces on traffic control
construction activities in the immediate area. The District Traffic
paving operations and will coordinate the paving operations with other
The District Traffic Representative will determine the hours of the
the number of traffic control personnel required.
coordinate the traffic control for paving operations and determine
The Engineer or Supervisor will be assigned to each project to
Moving Operations - Work by State Forces
Installing and Removing Traffic Control Patterns
toward the advanced warning signs.
work area or end of