TRAFFIC SIGNAL DESIGN MANUAL Effective Date: May 1, 2014 Table of Contents TABLE OF CONTENTS 1 GENERAL ............................................................................................................. 1-1 1.1 Purpose and Application of this Manual ................................................. 1-1 1.2 References ................................................................................................. 1-2 1.3 Plan Approval ............................................................................................ 1-5 1.3.1 Capital Improvement Projects ............................................................ 1-5 1.3.2 Privately Funded Projects .................................................................. 1-5 1.3.3 Private Utility Projects ........................................................................ 1-5 1.4 Utility Coordination ................................................................................... 1-6 1.5 Traffic Signal Design Checklists .............................................................. 1-6 2 PLAN PREPARATION ......................................................................................... 2-1 2.1 Drafting Standards .................................................................................... 2-1 2.1.1 Traffic Signal Plan Symbols/Legend ................................................... 2-3 2.2 Plan Sheets ................................................................................................ 2-6 2.2.1 Traffic Signal General Notes Sheet .................................................... 2-6 2.2.2 Traffic Signal Estimate of Quantities .................................................. 2-6 2.2.3 Traffic Signal Plan Sheet .................................................................... 2-6 2.2.4 Traffic Signal Detail Sheet .................................................................. 2-7 2.2.5 Traffic Signal Pole Fabrication and Orientation Data Sheet ............... 2-7 2.2.6 Traffic Signal Interconnect Sheets ..................................................... 2-7 2.3 Estimate of Quantities .............................................................................. 2-8 3 TEMPORARY TRAFFIC SIGNALS ...................................................................... 3-1 3.1 Temporary Traffic Signals ........................................................................ 3-1 3.2 Temporary Signal Supports ..................................................................... 3-2 3.2.1 Span Wire Temporary Traffic Signals ................................................. 3-2 3.3 Temporary Vehicle Detection ................................................................... 3-3 3.4 Temporary Vehicular Signal Heads ......................................................... 3-3 3.5 Temporary Pedestrian Features .............................................................. 3-3 3.6 Temporary Pavement Markings and Signs ............................................. 3-3 3.7 Temporary Signal Wiring and Controller Cabinets ................................ 3-4 4 SUPPORTS AND FOUNDATIONS ....................................................................... 4-1 4.1 Traffic Signal Supports ............................................................................. 4-1 4.1.1 Standard Mast Arm Supports ............................................................. 4-1 4.1.2 Decorative Mast Arm Supports .......................................................... 4-1 4.1.3 Double Mast Arm Supports ................................................................ 4-2 4.1.4 Strain Poles ........................................................................................ 4-2 4.1.4.1 Strain Pole Sizing ................................................................... 4-2 4.1.4.2 Span Configuration ................................................................. 4-3 4.1.5 Pedestal Supports .............................................................................. 4-3 4.1.5.1 5 ft. Pedestal .......................................................................... 4-4 4.1.5.2 10.7 ft. Pedestal ..................................................................... 4-4 4.1.5.3 12.7 ft. Pedestal ...................................................................... 4-4 Columbus Traffic Signal Design Manual, Version: May 1, 2014 i-1 Table of Contents 4.1.5.4 17.5 ft. Pedestal ..................................................................... 4-4 4.1.5.5 21 ft. Pedestal ......................................................................... 4-4 4.1.6 Bracket Arms ...................................................................................... 4-4 4.1.7 Finish Requirements .......................................................................... 4-4 4.1.7.1 Downtown District .................................................................... 4-5 4.1.7.2 Special Area Districts .............................................................. 4-5 4.2 Traffic Signal Support Foundations ........................................................ 4-5 4.2.1 Mast Arm and Strain Pole Foundations ............................................... 4-5 4.2.2 Pedestal Foundations .......................................................................... 4-5 4.3 Traffic Signal Support Placement ............................................................. 4-6 4.3.1 General Location ................................................................................. 4-6 4.3.2 Clear Zone .......................................................................................... 4-6 4.3.3 Underground Utility Clearance ............................................................ 4-6 4.3.4 Overhead Utility Clearance ................................................................. 4-6 4.3.5 Pushbutton Location............................................................................ 4-7 4.3.6 Elevation ............................................................................................. 4-7 4.3.7 Arm Length/Span Configuration .......................................................... 4-8 4.3.8 Distance from Stop Line ...................................................................... 4-8 4.4 Plan Requirements ..................................................................................... 4-9 4.4.1 Pole Identification ................................................................................ 4-9 4.4.2 Pole Orientation and Fabrication Data ................................................ 4-9 5 VEHICULAR SIGNALS ........................................................................................ 5-1 5.1 Vehicular Signal Head Specifications ...................................................... 5-1 5.1.1 Material Specifications ........................................................................ 5-1 5.1.2 Vehicular Signal Head Lens Size ........................................................ 5-1 5.1.3 Vehicular Signal Head Backplates ...................................................... 5-1 5.1.4 Signal Head Mounting ......................................................................... 5-3 5.1.5 Signal Head Color ............................................................................... 5-3 5.1.5.1 Special Signal Head Color ..................................................... 5-3 5.2 Vehicular Signal Head Application ........................................................... 5-3 5.2.1 Number of Signal Heads ..................................................................... 5-3 5.2.2 Distance from Stop Line to Signal Head .............................................. 5-4 5.2.3 Signal Head Mounting Height .............................................................. 5-4 5.2.4 Vehicular Signal Head Alignment ........................................................ 5-4 5.2.4.1 Vehicular Signal Head Alignment – Through Lanes ................ 5-5 5.2.4.2 Vehicular Signal Head Alignment – Turn Lanes ...................... 5-5 6 PEDESTRIAN FEATURES ................................................................................... 6-1 6.1 Pedestrian Signal Heads ........................................................................... 6-1 6.1.1 Material Specifications ........................................................................ 6-1 6.1.2 Pedestrian Head Mounting .................................................................. 6-1 6.1.3 Pedestrian Head Alignment ................................................................. 6-2 6.1.4 Pedestrian Head Color ........................................................................ 6-2 6.1.4.1 Special Pedestrian Head Color ............................................... 6-2 6.2 Pedestrian Pushbuttons ............................................................................ 6-3 Columbus Traffic Signal Design Manual, Version: May 1, 2014 i-2 Table of Contents 6.2.1 Pushbutton Specifications ................................................................... 6-3 6.2.2 Pushbutton Location/Mounting ............................................................ 6-3 6.3 Accessible Pedestrian Signals ................................................................. 6-4 6.3.1 Accessible Pedestrian Signals Specifications ................................. 6-4 6.3.2 Installation Requirements .................................................................... 6-4 7 INTERSECTION WIRING ....................................................................................