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RING 1 RING 2 1 $5 MAJOR STREET 42 $6 BARRIER = Phase Number = Protected Movement 43 MINOR STREET $4 = Permitted Movement Pedestrian Movement BARRIER In this ring and barrier diagram, which phases cannot be reversed in their sequencing? phase 1 and phase 2 phase 5 and phase 6 phase 1 and phase 5 O phase 3 and phase 4

RING 1 RING 2 1 $5 MAJOR STREET 42 $6 BARRIER = Phase Number = Protected Movement 43 MINOR STREET $4 = Permitted Movement Pedestrian Movement BARRIER In this ring and barrier diagram, which phases cannot be reversed in their sequencing? phase 1 and phase 2 phase 5 and phase 6 phase 1 and phase 5 O phase 3 and phase 4

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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The diagram is a "Ring and Barrier Diagram" used in traffic signal systems to manage intersection movements. It depicts two rings, Ring 1 and Ring 2, each containing three phases (Φ). **Ring and Barrier Diagram Explanation:** - **Ring 1:** - **Phase 1 (Φ1):** Allows left and through movements on the major street. Indicated with arrows pointing left and straight. - **Phase 2 (Φ2):** Allows right, left, and through movements on the major street. Indicated with arrows pointing in the respective directions and pedestrian movement. - **Ring 2:** - **Phase 5 (Φ5):** Similar to Phase 1, allows left and through movements on the opposite side of the major street. - **Phase 6 (Φ6):** Allows right, left, and through movements similar to Phase 2 on the opposite side of the major street. - **Barrier:** Separates the major street movements (Phases 1, 2, 5, 6) from the minor street movements. - **Minor Street:** - **Phase 3 (Φ3):** Permits left turns and through movements across the minor street. Indicated with respective arrows. - **Phase 4 (Φ4):** Allows similar movements as Phase 3, mirrored for traffic from the opposite direction. - **Legend:** - Symbols indicate the meaning of arrows, with attention to permitted and protected movements and pedestrian movements. **Question to Consider:** - In this ring and barrier diagram, which phases cannot be reversed in their sequencing? - ○ phase 1 and phase 2 - ○ phase 5 and phase 6 - ○ phase 1 and phase 5 - ○ phase 3 and phase 4 This educational analysis helps in understanding the sequence of traffic phases and their implications on traffic management and safety.
Transcribed Image Text:The diagram is a "Ring and Barrier Diagram" used in traffic signal systems to manage intersection movements. It depicts two rings, Ring 1 and Ring 2, each containing three phases (Φ). **Ring and Barrier Diagram Explanation:** - **Ring 1:** - **Phase 1 (Φ1):** Allows left and through movements on the major street. Indicated with arrows pointing left and straight. - **Phase 2 (Φ2):** Allows right, left, and through movements on the major street. Indicated with arrows pointing in the respective directions and pedestrian movement. - **Ring 2:** - **Phase 5 (Φ5):** Similar to Phase 1, allows left and through movements on the opposite side of the major street. - **Phase 6 (Φ6):** Allows right, left, and through movements similar to Phase 2 on the opposite side of the major street. - **Barrier:** Separates the major street movements (Phases 1, 2, 5, 6) from the minor street movements. - **Minor Street:** - **Phase 3 (Φ3):** Permits left turns and through movements across the minor street. Indicated with respective arrows. - **Phase 4 (Φ4):** Allows similar movements as Phase 3, mirrored for traffic from the opposite direction. - **Legend:** - Symbols indicate the meaning of arrows, with attention to permitted and protected movements and pedestrian movements. **Question to Consider:** - In this ring and barrier diagram, which phases cannot be reversed in their sequencing? - ○ phase 1 and phase 2 - ○ phase 5 and phase 6 - ○ phase 1 and phase 5 - ○ phase 3 and phase 4 This educational analysis helps in understanding the sequence of traffic phases and their implications on traffic management and safety.
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