Introduction - Connecticut 2.pdfآ  introduction good judgment ... lets traffic resume 2 optional portable

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  • Introduction

    Good

    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

    and distances.

    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

    Signs

    Short Duration

    1

  • FIVE PARTS

    FIVE PARTS OF A TRAFFIC CONTROL ZONE

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    ADVANCE WARNING AREA

    TRANSITION AREA

    BUFFER AREA

    WORK AREA

    TERMINATION AREA

    ACTIVITY AREA

    TO EXPECT AHEAD

    TELLS TRAFFIC WHAT

    OF ITS NORMAL PATH

    MOVES TRAFFIC OUT

    WORKERS

    FOR TRAFFIC AND

    PROVIDES PROTECTION

    TAKES PLACE

    WHERE WORK

    NORMAL OPERATIONS

    LETS TRAFFIC RESUME

    2

    OPTIONAL

    PORTABLE SIGN SUPPORT

    OR

    SCALE: NONE

    PRINCIPAL ENGINEER

    APPROVED

    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

    oncoming traffic.

    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

    3

  • 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

    zone.

    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

    600 FEET

    660 FEET

    780 FEET

    A SINGLE LANE CLOSURE

    MINIMUM TAPER LENGTH FOR

    540 FEET

    320 FEET

    250 FEET

    180 FEET30 MPH OR LESS

    35 MPH

    40 MPH

    45 MPH

    50 MPH

    55 MPH

    65 MPH

    POSTED SPEED LIMIT

    4

  • 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

    additional assistance.

    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