13/87 (A Guide to the Design of Traffic Signal)

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Contents

Preface

C15 AT(J) 13-87 A Guide to The Design of Traffic Signals.pdf
This Arahan Teknik (Jalan) on "A Guide to the Design of Traffic Signals" is to be used for the desiqn of traffic signals at all intersections. It is to be used in conjunction with Arahan Teknik (Jalan) 11/87 - "A Guide to the Design of At - Grade Intersections" and other relevant Arahan Tekniks.
This quideline presents fundamental concepts and to traffic signal design that are to be adopted. practices related In the past, road engineers have been relying totally on the suppliers to come up with signal timings and location design. With this guideline, it is hoped that road engineers will now be responsible for every aspect  of traffic signal design instead of adopting the supplier's design.
This Arahan Teknik will be updated from time to time and in this respect, any feedback from users will be most welcome. Any comments should be sent to Cawangan Jalan, lbu Pejabat ,JKR, Malaysia.


Contents

CHAPTER 1 : INTRODUCTION

  • OBJECTIVES OF TRAFFIC SIGNAL CONTROL
  • ADVANTAGES AND DISADVANTAGES OF SIGNAL CONTROL

CHAPTER 2 : SIGNAL INSTALLATION CRITERIA

  • GENERAL
  • WARRANT ANALYSIS

CHAPTER 3 : SIGNAL OPERATION REQUIREMENTS

  • PHASING ELEMENTS
  • RIGHT-TURN PHASING
  • SUGGESTED GUIDELINES FOR SEPARATE RIGHT-TURN PHASES
  • SELECTION OF PRI!TIMED OR ACTUATION SIGNAL

CHAPTER 4 : SIGNAL DISPLAY AND LOCATION

  • SIGNAL DISPLAY REQUIREMENTS
  • NUMBER AND LOCATION OF SIGNAL FACES
  • NUMBER OF LENSES PER SIGNAL FACE
  • SIGNAL SIZE, BACKPLATE, POST, AND ARRANGEMENT
  • EQUIPMENT AND MATERIAL
  • FLASHING OPERATION OF TRAFFIC SIGNALS
  • SIGNAL MOUNTING ALTERNATIVES

CHAPTER 5 : TRAFFIC SIGNAL CONTROLLERS AND DETECTORS

  • GENERAL
  • PRE TIMED CONTROLLERS
  • ACTUATED CONTROLLERS
  • CONTROLLER LOCATION
  • DETECTORS
  • LOCATION OF DETECTORS
  • INSTALLATION CONSIDERATIONS


CHAPTER 6 : TRAFFIC SIGNAL TIMING

  • OBJECTIVE
  • DESIGN PRINCIPLES
  1. Determination of basic saturation flow, S
  2. Determination of Y value
  3. Determination of total lost time per cycle, L
  4. Determination of optimum cycle time, Co
  5. Determination of signal settings
  6. Determination of Capacity
  7. Determination of delays and queues
  • GUIDING PRINCIPLES


CHAPTER 7 : DESIGN OF PROGRESSIVE SIGNAL TIMING

  • ADVANTAGES
  • APPLICATIONS
  • PROGRESSIVE SIGNAL SYSTEM DESIGN

BIBLIOGRAPHY

GLOSSARY

APPENDIX

  • APPENDIX A: DESIGN EXAMPLE
  • APPENDIX B: VEHICLE - ACTUATED SIGNAL FACILITIES


FIGURES

  • Peak hour volume warrant-urban or low speed
  • Peak hour volume warrant-rural or high speed
  • Two phase cycle
  • Three phase cycle
  • Four phase cycle
  • Heaviest right turn protected (leading green)
  • Heaviest right turn protected (lagging green)
  • Both right turns protected - no overlap (lead dual right)
  • Both right turns protected - no overlap (lag dual right)
  • Both right turns protected with overlap (quad right passing)
  • Lead lag
  • Directional separation
  • Cone of Vision for two lane approach
  • Typical arrangements of lenses in signal faces
  • Signal head configuration
  • Simple two-pole span
  • Mast arm with one overhead and one side mount signal head
  • Traffic Signal Calculations Reserve Capacity Diagram
  • Typical time space diagram


TABLES

  • Vehicular Volume Requirements for Warrant 1
  • Comparison of Right-turn phase alternatives
  • Minimum Visibility Distances
  • Adjustments for Grade Guidelines
  • Safe Stopping distance and detector setback
  • Relationship between effective lane width and saturation flow.
  • Correction factor for the effect of gradient
  • Correction factor for the effect of turning radius
  • Correction factor for turning traffic
  • Conversion factors to P.C.U.'s
  • Tabulation of A = <math>Template:(1 - λ) \over 2(1 - λx)\!</math>
  • Tabulation of B = x/2(1 - x)
  • Correction term of equation d = cA + B - K / q as a percentage of the first two terms
  • Level of Service for Signalised Intersection
  • Level of Service of Road