Task Analysis of Intersection Driving Scenarios: Information Processing Bottlenecks

U.S. Department of Transportation

Federal Highway Administration

Research, Development, and Technology

Turner-Fairbank Highway Research Center

6300 Georgetown Pike

McLean, VA 22101-2296

SECTION 2. METHODS

   Scenario Selection

   Scenario Analysis Components

   Scenario Description and Assumptions

   Scenario Timeline

   Task Analysis Table

   Segment Analyses

   Scenario-wide Analysis

   Limitations

SECTION 3. RESULTS

   Scenario 1–Left Turn on Green Light

     Description

     Scenario Timeline

     Task Analysis Table

     Scenario 1, Segment 1, Approach

     Scenario 1, Segment 2, Deceleration

     Scenario 1, Segment 3, Intersection Entry

     Scenario 1, Segment 4, Prepare for Turn

     Scenario 1, Segment 5, Execute Turn

     Scenario-Wide Analysis

     Information Processing Bottlenecks

   Scenario 2–Left Turn on Yellow Light

     Description

     Scenario Timeline

     Task Analysis Table

     Segment Analysis

     Scenario 2, Segment 1, Approach

     Scenario 2, Segment 2, Deceleration

     Scenario 2, Segment 3, Decision to Proceed

     Scenario 2, Segment 4, Intersection Entry

     Scenario 2, Segment 5, Execute Turn

     Scenario-Wide Analysis

     Information Processing Bottlenecks

   Scenario 3–Straight on Yellow Light

     Description

     Scenario Timeline

     Task Analysis Table

     Segment Analysis

     Scenario 3, Segment 1, Approach

     Scenario 3, Segment 2, Decision to Proceed

     Scenario 3, Segment 3, Intersection Entry

     Scenario-Wide Analysis

   Scenario 4–Straight on Green Light

     Description

     Scenario 4 Timeline

     Task Analysis Table

     Segment Analysis

     Scenario 4, Segment 1, Approach

     Scenario 4, Segment 2, Prepare for Lane Change

     Scenario 4, Segment 3, Execute Lane Change

     Scenario 4, Segment 4, Intersection Entry

     Scenario-Wide Analysis

     Information Processing Bottlenecks

   Scenario 5–Right Turn on Green Light

     Description

     Scenario Timeline

     Task Analysis Table

     Segment Analysis

     Scenario 5, Segment 1, Approach

     Scenario 5, Segment 2, Deceleration

     Scenario 5, Segment 3, Intersection Entry

     Scenario 5, Segment 4, Execute Turn

     Scenario-Wide Analysis

     Information Processing Bottlenecks

   Scenario 6–Right Turn on Red Light

     Description

     Scenario Timeline

     Task Analysis Table

     Segment Analysis

     Scenario 6, Segment 1, Approach

     Scenario 6, Segment 2, Prepare for Lane Change

     Scenario 6, Segment 3, Execute Lane Change

     Scenario 6, Segment 4, Stop

     Scenario 6, Segment 5, Prepare for Turn/Intersection Entry

     Scenario 6, Segment 6, Execute Turn

     Scenario-Wide Analysis

     Information Processing Bottlenecks

   Scenario 7–Stop on Red Light

     Description

     Scenario Timeline

     Task Analysis Table

     Segment Analysis

     Scenario 7, Segment 1, Approach

     Scenario 7, Segment 2, Stop

     Scenario 7, Segment 3, Proceed Through Intersection

     Scenario-Wide Analysis

     Information Processing Bottlenecks

SECTION 4. SUMMARY AND CONCLUSIONS

   Summary of Results

     Approach Segments Summary of Key Information Processing Bottlenecks

     Prepare for Lane Change and Execute Lane Change Segments Summary of Key Information Processing Bottlenecks

     Deceleration/Stop Segments Summary of Key Information Processing Bottlenecks

     Decision to Proceed Segments Summary of Key Information Processing Bottlenecks

     Intersection Entry Segments Summary of Key Information Processing Bottlenecks

     Prepare for Turn Segments Summary of Key Information Processing Bottlenecks

     Execute Turn Segments Summary of Key Information Processing Bottlenecks

     General Conclusions on the Nature of the Bottlenecks

     Advantages of the Task Analysis Approach

APPENDIX A. SCENARIO TIMING AND KINEMATICS
   General Assumptions
   Scenario Kinematics
   Scenario 1–Left Turn on Green Light
     Milestone A-Street sign becomes readable
     Milestone B-Comfortable braking distance
     Milestone C-Vehicle stops
     Milestone D-Turn completed

   Scenario 2–Left Turn on Yellow Light

     Milestone A-Comfortable braking distance

     Milestone B-Traffic signal turns yellow.

     Milestone C-Vehicle reaches turning speed

     Milestone D-Initiate turn

     Milestone E-Turn completed

     Milestone F-Braking distance for stopping in the intersection

     Milestone G-Last point for emergency maneuver in reaction to red-light runners

   Scenario 3–Straight on Yellow Light

     Milestone A-Farthest distance to legally proceed

     Milestone B-Aggressive braking distance

     Milestone C-Last point for emergency maneuver in reaction to red-light runners

     Milestone D-Last point for emergency maneuver in reaction to oncoming traffic turning left at the last minute

   Scenario 4–Straight on Green Light

     Milestone A-Driver detects lead vehicle braking

     Milestone B-Complete preparation for lane change

     Milestone C-Complete lane change

     Milestone D-Last point for emergency maneuver in reaction to red-light-runners

     Milestone E-Last point for emergency maneuver in reaction to oncoming traffic turning left at the last minute

   Scenario 5–Right Turn on Green

     Milestone A-Street sign becomes readable

     Milestone B-Comfortable braking distance

     Milestone C-Vehicle reaches turning speed

     Milestone D-Initiate turn

     Milestone E-Turn completed

     Milestone F-Braking distance for stopping in the intersection

   Scenario 6–Right Turn on Red Light

     Milestone A-Complete preparation for lane change

     Milestone B-Complete lane change

     Milestone C-Braking distance

     Milestone D-Vehicle stops

     Milestone E-Turn completed

   Scenario 7–Stop on Red Light

     Milestone A-Driver detects and responds to lead vehicle braking

     Milestone B-Vehicle stops

LIST OF FIGURES

   Figure 1. An outline diagram showing organization of components of each scenario analysis

   Figure 2. Example scenario plan diagram identifying key assumptions

   Figure 3. Two-page layout of segment analysis showing key components

   Figure 4. Scenario 1–Left Turn on Green Light diagram, details, and assumptions

   Figure 5. Scenario 1–Left Turn on Green Light timeline depicting key segment phases duration and event/task milestones

   Figure 6. Scenario 1-Left Turn on Green Light Approach segment scenario diagram

   Figure 7. Scenario 1-Left Turn on Green Light Deceleration Segment scenario diagram

   Figure 8. Scenario 1–Left Turn on Green Light Intersection Entry segment scenario diagram

   Figure 9. Scenario 1–Left Turn on Green Light Prepare for Turn segment scenario diagram

   Figure 10. Scenario 1–Left Turn on Green Light Execute Turn segment scenario diagram

   Figure 11. Scenario 1–Left Turn on Green Light total estimated workload ratings for all tasks in each segment

   Figure 12. Scenario 1–Left Turn on Green Light average estimated workload ratings per task for each scenario segment

   Figure 13. Scenario 2–Left Turn on Yellow Light diagram, details, and assumptions

   Figure 14. Scenario 2–Left Turn on Yellow Light timeline depicting key segment phases duration and event/task milestones

   Figure 15. Scenario 2–Left Turn on Yellow Light Approach segment scenario diagram

   Figure 16. Scenario 2–Left Turn on Yellow Light Deceleration segment scenario diagram

   Figure 17. Scenario 2–Left Turn on Yellow Light Decision to Proceed segment scenario diagram

   Figure 18. Scenario 2–Left Turn on Yellow Light Intersection Entry segment scenario diagram

   Figure 19. Scenario 2–Left Turn on Yellow Light Execute Turn segment scenario diagram

   Figure 20. Scenario 2–Left Turn on Yellow Light total estimated workload ratings for all tasks in each scenario segment

   Figure 21. Scenario 2–Left Turn on Yellow Light average estimated workload ratings per task for each scenario segment

   Figure 22. Scenario 3–Straight on Yellow Light diagram, details, and assumptions

   Figure 23. Scenario 3–Straight on Yellow Light timeline depicting duration of key segment phases and event/task milestones

   Figure 24. Scenario 3–Straight on Yellow Light Approach segment diagram

   Figure 25. Scenario 3–Straight on Yellow Light Scenario Decision to Proceed segment diagram

   Figure 26. Scenario 3–Straight on Yellow Light Intersection Entry segment diagram

   Figure 27. Scenario 3–Straight on Yellow Light total estimated workload ratings for all tasks in each scenario segment

   Figure 28. Scenario 3–Straight on Yellow Light average estimated workload ratings per task for each scenario segment

   Figure 29. Scenario 4–Straight on Green Light diagram, details, and assumptions

   Figure 30. Scenario 4–Straight on Green Light timeline of key segment phases duration and event/task milestones.

   Figure 31. Scenario 4–Straight on Green Light Approach segment diagram

   Figure 32. Scenario 4–Straight on Green Light Prepare for Lane Change segment diagram

   Figure 33. Scenario 4–Straight on Green Light Execute Lane Change segment of scenario diagram

   Figure 34. Scenario 4–Straight on Green Light Intersection Entry segment diagram

   Figure 35. Scenario 4–Straight on Green Light total estimated workload ratings for all tasks in each scenario segment

   Figure 36. Scenario 4–Straight on Green Light average estimated workload ratings per task for each scenario segment

   Figure 37. Scenario 5–Right Turn on Green Light diagram, details, and assumptions

   Figure 38. Scenario 5–Right Turn on Green Light timeline of key segment phases duration and task milestones

   Figure 39. Scenario 5–Right Turn on Green Light Approach segment diagram

   Figure 40. Scenario 5–Right Turn on Green Light Deceleration segment diagram

   Figure 41. Scenario 5–Right Turn on Green Light Intersection Entry segment diagram

   Figure 42. Scenario 5–Right Turn on Green Light Execute Turn segment diagram

   Figure 43. Scenario 5–Right Turn on Green Light total estimated workload ratings for all tasks in each scenario segment

   Figure 44. Scenario 5–Right Turn on Green Light average estimated workload ratings per task for each scenario segment

   Figure 45. Scenario 6–Right Turn on Red Light scenario diagram, details, and assumptions

   Figure 46. Scenario 6–Right Turn on Red Light Scenario timeline depicting key segment phases duration and event/task milestones

   Figure 47. Scenario 6–Right Turn on Red Light Approach segment scenario diagram

   Figure 48. Scenario 6–Right Turn on Red Light Prepare for Lane Change segment of scenario diagram.

   Figure 49. Scenario 6–Right Turn on Red Light Execute Lane Change segment diagram

   Figure 50. Scenario 6–Right Turn on Red Light Stop segment diagram

   Figure 51. Scenario 6–Right Turn on Red Light Prepare for Turn/Intersection Entry segment of scenario diagram

   Figure 52. Scenario 6–Right Turn on Red Light Execute Turn segment diagram

   Figure 53. Scenario 6–Right Turn on Red Light total estimated workload ratings for all tasks in each scenario segment

   Figure 54. Scenario 6–Right Turn on Red Light average estimated workload ratings per task for each scenario segment

   Figure 55. Scenario 7–Stop on Red Light diagram, details, and assumptions

   Figure 56. Scenario 7–Stop on Red Light Scenario timeline depicting key segment phases duration and event/task milestones

   Figure 57. Scenario 7–Stop on Red Light Approach segment diagram

   Figure 58. Scenario 7–Stop on Red Light Stop segment diagram

   Figure 59. Scenario 7–Stop on Red Light Proceed Through Intersection segment diagram

   Figure 60. Scenario 7–Stop on Red Light total estimated workload ratings for all tasks in each scenario segment.

   Figure 61. Scenario 7–Stop on Red Light average estimated workload ratings per task for each scenario segment.

   Figure 62. Scenario 1–Left Turn on Green Light timeline depicting key temporal milestones

   Figure 63. Scenario 2–Left Turn on Yellow Light timeline depicting key temporal milestones

   Figure 64. Scenario 3–Straight on Yellow Light timeline depicting key temporal milestones

   Figure 65. Scenario 4–Straight on Green Light timeline depicting key temporal milestones

   Figure 66. Scenario 5–Right Turn on Green Light timeline depicting key temporal milestones

   Figure 67. Scenario 6–Right Turn on Red Light timeline depicting key temporal milestones

   Figure 68. Scenario 7–Stop on Red Light timeline depicting key temporal milestones

LIST OF TABLES

Table 1. Information sources used in the task analysis.

Table 2. Workload estimation chart used to determine workload estimates for each segment task.

Table 3. Scenario 1–Left Turn on Green Light scenario partitioning based on driving objectives and speed characteristics by segment.

Table 4. Scenario 1–Left Turn on Green Light assumptions and corresponding justifications.

Table 5. Scenario 1–Left Turn on Green Light task analysis table.

Table 6. Scenario 1–Left Turn on Green Light Approach segment tasks and information processing subtasks.

Table 7. Scenario 1–Left Turn on Green Light Approach segment relative timing and duration of segment tasks and summary of key findings.

Table 8. Scenario 1–Left Turn on Green Light Deceleration segment tasks and information processing subtasks.

Table 9. Scenario 1–Left Turn on Green Light Deceleration segment relative timing and duration of segment tasks and summary of key findings.

Table 10. Scenario 1–Left Turn on Green Light Intersection Entry segment tasks and information processing subtasks involved.

Table 11. Scenario 1–Left Turn on Green Light Intersection Entry segment relative timing and duration of segment tasks and summary of key findings.

Table 12. Scenario 1–Left Turn on Green Light Prepare for Turn segment tasks and information processing subtasks.

Table 13. Scenario 1–Left Turn on Green Light Prepare for Turn segment relative timing and duration of segment tasks and summary of key findings.

Table 14. Scenario 1–Left Turn on Green Light Execute Turn segment tasks and information processing subtasks.

Table 15. Scenario 1–Left Turn on Green Light Execute Turn segment relative timing and duration of segment tasks and summary of key findings.

Table 16. Scenario 1–Left Turn on Green Light combined and average workload ratings, pacing of key tasks, and nature of bottlenecks that indicate potential problems for each scenario segment.

Table 17. Scenario 2–Left Turn on Yellow Light driving objectives and speed characteristics as basis for each scenario segment partitioning.

Table 18. Scenario 2–Left Turn on Yellow Light assumptions and corresponding justifications.

Table 19. Scenario 2–Left Turn on Yellow Light task analysis table.

Table 19. Scenario 2–Left Turn on Yellow Light task analysis table, continued.

Table 20. Scenario 2–Left Turn on Yellow Light Approach segment tasks and information processing subtasks.

Table 21. Scenario 2–Left Turn on Yellow Light Approach segment relative timing and duration of segment tasks and summary of key findings.

Table 22. Scenario 2–Left Turn on Yellow Light Deceleration segment tasks and information processing subtasks.

Table 23. Scenario 2–Left Turn on Yellow Light Deceleration segment relative timing and duration of segment tasks and summary of key findings.

Table 24. Scenario 2–Left Turn on Yellow Light Decision to Proceed segment tasks and information processing subtasks.

Table 25. Scenario 2–Left Turn on Yellow Light Decision to Proceed segment relative timing and duration of segment tasks and summary of key findings.

Table 26. Scenario 2–Left Turn on Yellow Light Intersection Entry segment tasks and information processing subtasks.

Table 27. Scenario 2–Left Turn on Yellow Light Intersection Entry segment relative timing and duration of segment tasks and summary of key findings.

Table 28. Scenario 2–Left Turn on Yellow Light Execute Turn Segment tasks and information processing subtasks.

Table 29. Scenario 2–Left Turn on Yellow Light Execute Turn segment relative timing and duration of segment tasks and summary of key findings.

Table 30. Scenario 2–Left Turn on Yellow Light combined and average workload ratings, pacing of key tasks, and the nature of bottlenecks that indicate potential problems for each scenario segment.

Table 31. Scenario 3–Straight on Yellow Light driving objectives and speed characteristics for each scenario segment as a basis for the scenario partitioning.

Table 32. Scenario 3–Straight on Yellow Light assumptions and corresponding justifications.

Table 33. Scenario 3–Straight on Yellow Light task analysis table.

Table 34. Scenario 3–Straight on Yellow Light Approach segment tasks and information processing subtasks.

Table 35. Scenario 3–Straight on Yellow Light Approach segment relative timing and duration of segment tasks and summary of key findings.

Table 36. Scenario 3–Straight on Yellow Light segment 2 Decision to Proceed tasks and information processing subtasks.

Table 37. Scenario 3–Straight on Yellow Light Decision to Proceed segment relative timing and duration of segment tasks and summary of key findings.

Table 38. Scenario 3–Straight on Yellow Light Intersection Entry segment of tasks and information processing subtasks.

Table 39. Scenario 3–Straight on Yellow Light Intersection Entry segment relative timing and duration of segment tasks and summary of key findings.

Table 40. Scenario 3–Straight on Yellow Light combined and average workload ratings, pacing of key tasks, and the nature of bottlenecks that indicate potential problems for each scenario segment.

Table 41. Scenario 4–Straight on Green Light driving objectives and speed characteristics for each scenario segment as a basis for the scenario partitioning.

Table 42. Scenario 4–Straight on Green Light assumptions and corresponding justifications.

Table 43. Scenario 4–Straight on Green Light task analysis table.

Table 44. Scenario 4–Straight on Green Light Approach segment tasks and information processing subtasks.

Table 45. Relative timing and duration of segment tasks and summary of key findings for the Approach segment of Scenario 4–Straight on Green Light.

Table 46. Scenario 4–Straight on Green Light Prepare for Lane Change segment of tasks and information processing subtasks.

Table 47. Scenario 4–Straight on Green Light Prepare for Lane Change segment relative timing and duration of segment tasks and summary of key findings.

Table 48. Scenario 4–Straight on Green Light Execute Lane Change segment tasks and information processing subtasks.

Table 49. Scenario 4–Straight on Green Light Execute Lane Change segment of relative timing and duration of segment tasks and summary of key findings.

Table 50. Scenario 4–Straight on Green Light Intersection Entry segment tasks and information processing subtasks.

Table 51. Scenario 4–Straight on Green Light Intersection Entry segment of relative timing and duration of segment tasks and summary of key findings.

Table 52. Combined and average workload ratings, pacing of key tasks, and nature of bottlenecks that indicate potential problems for each scenario segment.

Table 53. Scenario 5–Right Turn on Green Light driving objectives and speed characteristics for each scenario segment used as a basis for the scenario partitioning.

Table 54. Scenario 5–Right Turn on Green Light assumptions and corresponding justifications.

Table 55. Scenario 5–Right Turn on Green Light task analysis table.

Table 56. Scenario 5–Right Turn on Green Light Approach segment tasks and information processing subtasks.

Table 57. Scenario 5–Right Turn on Green Light Approach segment relative timing and duration of segment tasks and summary of key findings.

Table 58. Scenario 5–Right Turn on Green Light Deceleration segment tasks and information processing subtasks.

Table 59. Scenario 5–Right Turn on Green Light Deceleration segment relative timing and duration of segment tasks and summary of key findings.

Table 60. Scenario 5–Right Turn on Green Light Intersection Entry segment tasks and information processing subtasks.

Table 61. Scenario 5–Right Turn on Green Light Intersection Entry segment of relative timing and duration of segment tasks and summary of key findings.

Table 62. Scenario 5–Right Turn on Green Light Execute Turn segment tasks and information processing subtasks.

Table 63. Scenario 5–Right Turn on Green Light Execute Turn segment relative timing and duration of segment tasks and summary of key findings.

Table 64. Scenario 5–Right Turn on Green Light combined and average workload ratings, pacing of key tasks, and nature of bottlenecks that indicate potential problems for each scenario segment.

Table 65. Scenario 6–Right Turn on Red Light driving objectives and speed characteristics for each scenario segment as a basis for the scenario partitioning.

Table 66. Scenario 6–Right Turn on Red Light assumptions and corresponding justifications.

Table 67. Scenario 6–Right Turn on Red Light task analysis table.

Table 68. Scenario 6–Right Turn on Red Light Approach segment tasks and information processing subtasks.

Table 69. Scenario 6–Right Turn on Red Light Approach segment relative timing and duration of segment tasks and summary of key findings.

Table 70. Scenario 6–Right Turn on Red Light Prepare for Lane Change segment tasks and information processing subtasks.

Table 71. Scenario 6–Right Turn on Red Light Prepare for Lane Change segment of relative timing and duration of segment tasks and summary of key findings.

Table 72. Scenario 6–Right Turn on Red Light Execute Lane Change segment tasks and information processing subtasks.

Table 73. Scenario 6–Right Turn on Red Light Execute Lane Change segment of relative timing and duration of segment tasks and summary of key findings.

Table 74. Stop Segment of Scenario 6–Right Turn on Red Light tasks and information processing subtasks.

Table 75. Scenario 6–Right Turn on Red Light Stop segment of relative timing and duration of segment tasks and summary of key findings.

Table 76. Scenario 6–Right Turn on Red Light Prepare for Turn/Intersection Entry segment tasks and information processing subtasks.

Table 77. Scenario 6–Right Turn on Red Light Prepare for Turn / Intersection Entry segment relative timing and duration of segment tasks and summary of key findings.

Table 78. Scenario 6–Right Turn on Red Light Execute Turn segment tasks and information processing subtasks.

Table 79. Scenario 6–Right Turn on Red Light Execute Turn segment of relative timing and duration of segment tasks and summary of key findings.

Table 80. Scenario 6–Right Turn on Red Light combined and average workload ratings, pacing of key tasks, and nature of bottlenecks that indicate potential problems for each scenario segment.

Table 81. Scenario 7–Stop on Red Light driving objectives and speed characteristics for each scenario segment used as a basis for the scenario partitioning.

Table 82. Scenario 7–Stop on Red Light assumptions and corresponding justifications.

Table 83. Scenario 7–Stop on Red Light task analysis table.

Table 84. Scenario 7–Stop on Red Light Approach segment tasks and information processing subtasks.

Table 85. Scenario 7–Stop on Red Light Approach segment of relative timing and duration of segment tasks and summary of key findings.

Table 86. Scenario 7–Stop on Red Light Stop segment tasks and information processing subtasks.

Table 87. Scenario 7–Stop on Red Light Stop segment of relative timing and duration of segment tasks and summary of key findings.

Table 88. Scenario 7–Stop on Red Light Proceed Through Intersection segment tasks and information processing subtasks.

Table 89. Scenario 7–Stop on Red Light Proceed Through Intersection segment of relative timing and duration of segment tasks and summary of key findings.

Table 90. Combined and average workload ratings, pacing of key tasks, and nature of bottlenecks that indicate potential problems for each scenario segment.

Table 91. A summary of the nature of the information processing bottlenecks for each scenario.

Table 92. Commonly applied assumptions with corresponding justification.

Table 93. Scenario 1–Left Turn on Green Light description of key temporal milestones.

Table 94. Scenario 1–Left Turn on Green Light equations and assumptions for Milestone A.

Table 95. Scenario 1–Left Turn on Green Light, Milestone B, equations and assumptions.

Table 96. Scenario 1–Left Turn on Green Light, Milestone C, equations and assumptions.

Table 97. Scenario 1–Left Turn on Green Light, Milestone D, equations and assumptions.

Table 98. Scenario 2–Left Turn on Yellow Light description of key temporal milestones.

Table 99. Scenario 2–Left Turn on Yellow Light, Milestone A, equations and assumptions.

Table 100. Scenario 2–Left Turn on Yellow Light, Milestone B, equations and assumptions.

Table 101. Scenario 2–Left Turn on Yellow Light, Milestone C, equations and assumptions.

Table 102. Scenario 2–Left Turn on Yellow Light, Milestone D, equations and assumptions.

Table 103. Scenario 2–Left Turn on Yellow Light, Milestone E, equations and assumptions.

Table 104. Scenario 2–Left Turn on Yellow Light, Milestone F, equations and assumptions.

Table 105. Scenario 2–Left Turn on Yellow Light, Milestone G, equations and assumptions.

Table 106. Scenario 3–Straight on Yellow Light description of key temporal milestones.

Table 107. Scenario 3–Straight on Yellow Light, Milestone A, equations and assumptions.

Table 108. Scenario 3–Straight on Yellow Light, Milestone B, equations and assumptions.

Table 109. Scenario 3–Straight on Yellow Light, Milestone C, equations and assumptions.

Table 110. Scenario 3–Straight on Yellow Light, Milestone D, equations and assumptions.

Table 111. Scenario 4–Straight on Green Light description of key temporal milestones.

Table 112. Scenario 4–Straight on Green Light, Milestone A, equations and assumptions.

Table 113. Scenario 4–Straight on Green Light, Milestone B, equations and assumptions.

Table 114. Scenario 4–Straight on Green Light, Milestone C, equations and assumptions.

Table 115. Scenario 4–Straight on Green Light, Milestone D, equations and assumptions.

Table 116. Scenario 4–Straight on Green Light, Milestone E, equations and assumptions.

Table 117. Scenario 5–Right Turn on Green Light description of key temporal milestones.

Table 118. Scenario 5–Right Turn on Green Light, Milestone A, equations and assumptions.

Table 119. Scenario 5–Right Turn on Green Light, Milestone B, equations and assumptions.

Table 120. Scenario 5–Right Turn on Green Light, Milestone C, equations and assumptions.

Table 121. Scenario 5–Right Turn on Green Light, Milestone D, equations and assumptions.

Table 122. Scenario 5–Right Turn on Green Light, Milestone E, equations and assumptions.

Table 123. Scenario 5–Right Turn on Green Light, Milestone F, equations and assumptions.

Table 124. Scenario 6–Right Turn on Red Light description of key temporal milestones.

Table 125. Scenario 6–Right Turn on Red Light, Milestone A, equations and assumptions.

Table 126. Scenario 6–Right Turn on Red Light, Milestone B, equations and assumptions.

Table 127. Scenario 6–Right Turn on Red Light, Milestone C, equations and assumptions.

Table 128. Scenario 6–Right Turn on Red Light, Milestone D, equations and assumptions.

Table 129. Scenario 6–Right Turn on Red Light, Milestone E, equations and assumptions.

Table 130. Scenario 7–Stop on Red Light description of key temporal milestones.

Table 131. Scenario 7–Stop on Red Light, Milestone A, equations and assumptions.

Table 132. Scenario 7–Stop on Red Light, Milestone B, equations and assumptions.

AASHTO - American Association of State Highway and Transportation Officials

FHWA - Federal Highway Administration

GES - General Estimates System

LTAP/LD - left turn across path-lateral direction conflict

LTAP/OD - left turn across path-opposite direction conflict

LVM - lead-vehicle moving

LVS - lead-vehicle stationary

MSK - meter-second-kilogram

MUTCD - Manual of Uniform Traffic Control Devices

NA - not applicable

POV - principle other vehicle

RT - reaction time

SI - International System of Units

TTC - time-to-collision