Signal Timing Manual - Second Edition (2015) / Chapter Skim
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Pages 14-45
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Chapter 3. Signal Timing Concepts CHAPTER 3 SIGNAL TIMING CONCEPTS CONTENTS 3.1 TRAFFIC SIGNAL BASICS .....................................................................................................
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Chapter 3. Signal Timing Concepts LIST OF EXHIBITS Exhibit 3-1 Chapter Outline Using the Outcome Based Process .......................................
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Chapter 3. Signal Timing Concepts LIST OF EXHIBITS Exhibit 3-1 Chapter Outline Using the Outcome Based Process .......................................
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Chapter3-2 3. Signal Timing Concepts operation of a modern trafic signal controller before assessing various alternative timing strategies and values.
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Chapter 3. Signal Timing Concepts 3-3 recognize the relationship among users, detection, and the signal controller, as well as how that relationship in luences the resultant displays (i.e., vehicle displays, pedestrian displays, and occasionally special displays for speci ic users)
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Chapter3-4 3. Signal Timing Concepts 3.1.2 Basic Signal Controller Concepts Signal controllers (speciically the internal program called irmware)
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Chapter 3. Signal Timing Concepts 3-5 for through trafic)
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Chapter3-6 3. Signal Timing Concepts 3.2.1 Define the Operang Environment The irst step in the outcome based process is deining the operating environment.
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Chapter 3. Signal Timing Concepts 3-7 3.2.1.3 Roadway Classificaon The roadway facility within the larger transportation system can in luence user expectations, which in turn can in luence how the roadway should be timed.
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Chapter3-8 3. Signal Timing Concepts on trafic conditions.
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Chapter3-8 3. Signal Timing Concepts on trafic conditions.
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Chapter3-10 3. Signal Timing Concepts 3.2.3 Establish User and Movement Priori es Operating environment and intersection users play a key role in how an intersection (or system of intersections)
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Chapter3-10 3. Signal Timing Concepts 3.2.3 Establish User and Movement Priori es Operating environment and intersection users play a key role in how an intersection (or system of intersections)
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3-12 Chapter 3. Signal Timing Concepts • Adopt the role of the different types of intersection users: o Motorized Vehicle Driver: Drive the corridor making a sample of movements (e.g., through, left turn, and minor street)
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3-12 Chapter 3. Signal Timing Concepts • Adopt the role of the different types of intersection users: o Motorized Vehicle Driver: Drive the corridor making a sample of movements (e.g., through, left turn, and minor street)
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3-14 Chapter 3. Signal Timing Concepts 3.3.2.2 Movement Counts Volumes from movement counts are used to assess the existing and future operations at an intersection.
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3-14 Chapter 3. Signal Timing Concepts 3.3.2.2 Movement Counts Volumes from movement counts are used to assess the existing and future operations at an intersection.
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3-16 Chapter 3. Signal Timing Concepts video, the practitioner should review the associated video to check the quality of the counts; understand the actual trafic demand if greater than the capacity; and evaluate the inluences of various modes, nearby bus stops, driveways, on-street parking, and weather conditions that may affect intersection performance (see Chapter 11 for weather-related issues)
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From page 32... ...
3-16 Chapter 3. Signal Timing Concepts video, the practitioner should review the associated video to check the quality of the counts; understand the actual trafic demand if greater than the capacity; and evaluate the inluences of various modes, nearby bus stops, driveways, on-street parking, and weather conditions that may affect intersection performance (see Chapter 11 for weather-related issues)
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3-18 Chapter 3. Signal Timing Concepts 3.3.5 Exisng Signal Timing The existing signal timing can help the practitioner understand what currently exists in the ield and provide a baseline for improvement.
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3-18 Chapter 3. Signal Timing Concepts 3.3.5 Exisng Signal Timing The existing signal timing can help the practitioner understand what currently exists in the ield and provide a baseline for improvement.
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3-20 Chapter 3. Signal Timing Concepts 3.4.1 Select Operaonal Objecves By clearly establishing objectives, a practitioner will be able to choose timing values that relect user needs.
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3-20 Chapter 3. Signal Timing Concepts 3.4.1 Select Operaonal Objecves By clearly establishing objectives, a practitioner will be able to choose timing values that relect user needs.
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3-22 Chapter 3. Signal Timing Concepts software program or related measure.
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3-22 Chapter 3. Signal Timing Concepts software program or related measure.
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3-24 Chapter 3. Signal Timing Concepts the FHWA Travel Time Data Collection Handbook (11)
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3-24 Chapter 3. Signal Timing Concepts the FHWA Travel Time Data Collection Handbook (11)
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3-26 Chapter 3. Signal Timing Concepts Queues can be estimated using optimization software, but conducting a ield visit is the best way to evaluate conditions.
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3-26 Chapter 3. Signal Timing Concepts Queues can be estimated using optimization software, but conducting a ield visit is the best way to evaluate conditions.
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3-28 Chapter 3. Signal Timing Concepts violations may be occurring (as shown in Exhibit 3-24)
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3-28 Chapter 3. Signal Timing Concepts violations may be occurring (as shown in Exhibit 3-24)
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3-30 Chapter 3. Signal Timing Concepts 10.
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