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Crashworthiness and Protection of ITS Field Devices
Example Drawings: ITS Devices with Breakaway Supports

This pages includes a listing of example drawings of the following ITS devices with breakaway supports:

  • Flashing Beacon System
  • Ramp Meters
  • Dynamic Message Signs
  • Speed Detection/Display Systems
  • Cameras
  • Other ITS Devices
  • Miscellaneous Electrical Details

If you would like to contribute to the listing or have any questions, please contact Linda Preisen at preisen@acconsultants.org.

Flashing Beacon System

State

Design Detail

Source Breakaway Support
Georgia Flashing School Assembly – Post Mounted (TS-12B) Georgia DOT Construction Standards

Aluminum Pole with Pedestal Base (Footing Foundation)

Michigan Sign Mounted Beacon Michigan DOT Standards and Special Details

Perforated Steel Square Tube Posts (Ground-Driven)

Rectangular Rapid Flashing Beacon (Pedestrian Crossing)

Aluminum Pole with Frangible Square
Aluminum Base (Footing Foundation)

Minnesota Advance Warning Flasher Design MnDOT Traffic Engineering Signal Plans

Pedestal Pole with Breakaway Pedestal Base (Footing Foundation)

Washington

Flashing Beacon Type 1 Signal

Washington State DOT Standard Plans

Tapered Steel Shaft with Slip Base (Footing Foundation)

Texas Roadside Flashing Beacon Assembly Texas DOT Traffic Standards

Aluminum Pole with Pedestal Base (Footing Foundation)

Solar Powered Roadside Flashing Beacon Assembly

Aluminum Pole with Pedestal Base (Footing Foundation)

FHWA

Flashing Light Warning Apparatus FHWA SS-112 Acceptance Letter

Breakaway Hardware Accepted for Use on the National Highway System

Aluminum Pole with Cast Aluminum Breakaway Transformer Base (Footing Foundation) OR U-Channel Steel Posts with Lap Splice Breakaway System (Ground-Driven)

School Zone Flashing Beacon System SS-161 Acceptance Letter

Galvanized Steel Pole with Pelco 5300 Series Breakaway Base (Foundation type not shown)

Ramp Meters

State

Design Detail

Source Breakaway Support
Georgia Ramp Meter Signal Support Structures Detail (ITS-54) Georgia DOT Construction Standards

Aluminum Pole with Pedestal Base (Footing Foundation)

Minnesota

Ramp Meter (one way) Detail
with Standard Plate 8122F Pedestal and Pedestal Base (for Traffic Control Signals Support)

MnDOT ITS Project Management Design Manual and MnDOT Standard Plans

Aluminum Pole with Pedestal Base (Footing Foundation)

Washington

Ramp Meter Signal:

See WS DOT Standard Plans for all related standard details
Washington State DOT Standard Plans

Tapered Steel Shaft with Slip Base (Footing Foundation)

Dynamic Message Signs

State

Design Detail

Source Breakaway Support
Michigan LED Changeable Message “Open-Closed” Sign Michigan DOT Standards and Special Details

Steel I-Beam Posts with Slip Base (Footing Foundation)

Pennsylvania Post-Mounted Dynamic Message Signs Publication 647 – Civil and Structural Standard Drawings for ITS

Steel Posts – Post Selection Tables
Provided on Plan Sheets (Footing Foundation)

Speed Detection/Display Systems

State

Design Detail

Source Breakaway Support
FHWA

Radar Speed Display on a Slip Base Support SS-135 Acceptance Letter

Breakaway Hardware Accepted for Use on the National Highway System

4” Diameter Pole with Generic Four-Bolt Slip Base or Comparable Base using Crashworthy Frangible Couplings (Ground-Driven base shown)

IDC Speed Check Radar Speed Display Devices FHWA SS-163 Acceptance Letter

Breakaway Hardware Accepted for Use on the National Highway System

Aluminum Pole with Pedestal Base (Foundation type not shown)

Cameras

State

Design Detail

Source Breakaway Support
FHWA

Red Light Camera Mounted on Pelco Pole FHWA SS-158 Acceptance Letter

Breakaway Hardware Accepted for Use on the National Highway System

Pelco GS-11 Aluminum Pole and Base (Footing Foundation)

Other ITS Devices

State

Design Detail

Source Breakaway Support
Idaho

Non-Invasive Pavement Sensor Pole
and Pole Foundation Detail I-7-C

Bob Koberlein Robert.Koeberlein@itd.idaho.gov

Steel Pole with Slip Base (Footing Foundation)

Miscellaneous Electrical Details

State

Design Detail

Source Breakaway Support
Idaho Dynamic Message Signs Breakaway Electrical Details Bob Koberlein Robert.Koeberlein@itd.idaho.gov N/A
Pennsylvania Highway Advisory Radio System - Electrical Details Publication 647 – Civil and Structural Standard Drawings for ITS N/A

 

 

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