TEOpS Chapter 4

Chapter 4 - Signals

Section 1 - General

• 4-1-1 Traffic Signal Glossary
• 4-1-2 Alternatives to Signals
• 4-1-3 Signal Development Process
• 4-1-4 Funding

Section 2 - Capacity Analysis and Intersection Geometry

• 4-2-1 Capacity Analysis
• 4-2-2 Intersection Geometrics
• 4-2-3 Other Considerations

Section 3 - Field Investigation Guidelines

• 4-3-1 Field Investigation Introduction
• 4-3-2 Intersection Inventory

Section 4 - Signal Investigation Study

• 4-4-1 Signal Investigation Study
• 4-4-2 Data Collection
• 4-4-3 Traffic Signal Warrants

Section 5 - Signal Plan Format

• 4-5-1 Permanent Signal Plan Format
• 4-5-2 Signal Plan Revisions
• 4-5-3 Signal Plan Development Process
• 4-5-4 Sample Plan Sheets

Section 6 - Signal Infrastructure Design

• 4-6-1 Signal Infrastructure Design Introduction
• 4-6-2 Signal Head Layout
• 4-6-3 Signal Poles and Foundations
• 4-6-4 Conduit Size and Layout
• 4-6-5 Control Cabinet and Electrical Service
• 4-6-6 Battery Backup Systems
• 4-6-7 Pull Boxes
• 4-6-8 Signing and Pavement Marking
• 4-6-9 Intersection Lighting
• 4-6-10 Pedestrian and Bicyclist Crossings
• 4-6-11 Emergency Vehicle Preemption and Traffic Signal Priority Detection
• 4-6-12 Monotube Signal Arms and Pole Structures

Section 7 - Operations

• 4-7-1 Sequence of Operations
• 4-7-2 Left Turn Phasing
• 4-7-4 Flashing Operations
• 4-7-5 Vehicle Clearnance Intervals
• 4-7-6 Traffic Signal Coordination and Communication
• 4-7-7 Preemption of Traffic Signals near Railroad Grade Crossings
• Signal Preemption at Highway-Rail Grade Crossings Worksheet
• Railroad Preemption Inspection Form 1a (to be completed by Traffic Signal Operating Agency) | Instructions
• Railroad Preemption Inspection Form 1b (to be completed by Railroad Operating Company) | Instructions
• 4-7-9 Emergency Vehicle Preemption and Traffic Signal Priority

Section 8 - Detector and Controller Logic

• 4-8-1 Vehicle Detection
• 4-8-2 Detector/Controller Logic Chart

Section 9 - Electrical Cable

• 4-9-1 Cable Type/Information/Connections

Section 10 - Temporary Signals

• 4-10-1 Temporary Signal Plan
• 4-10-2 Temporary Signal Infrastructure Design
• 4-10-3 Temporary Signal Head Design/Layout
• 4-10-4 Temporary Signal Detection

Section 11 - Pedestrians and Bicycle Facilities

• 4-11-1 Pedestrian and Bicyclist Crossings
• 4-11-2 Pedestrian Phasing
• 4-11-3 Beacons