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$1 $5 MAJOR STREET 42 46 BARRIER -Phase Number -Protected Movement 43 MINOR STREET LU Permitted Movement -Pedestrian Movement BARRIER In this ring and barrier diagram, what sequencing is used for the protected left turns? lead-lead lead-lag lag-lag none

$1 $5 MAJOR STREET 42 46 BARRIER -Phase Number -Protected Movement 43 MINOR STREET LU Permitted Movement -Pedestrian Movement BARRIER In this ring and barrier diagram, what sequencing is used for the protected left turns? lead-lead lead-lag lag-lag none

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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### Ring and Barrier Diagram for Traffic Control **Diagram Explanation:** The diagram illustrates a ring and barrier system used to manage traffic signals at an intersection with a major and minor street. This system is divided into six phases across two rings and two barriers. - **Rings and Barriers:** - **Major Street (Ring 1):** - **Phase 1:** Allows left turns and through traffic from the left side. - **Phase 2:** Allows left turns and through traffic from the right side. - **Minor Street (Ring 2):** - **Phase 3:** Allows left turns and through traffic from the left side. - **Phase 4:** Allows left turns and through traffic from the right side. - **Barriers:** - Barrier lines separate phases to prevent conflicting movements across the intersection. - **Phases for Pedestrian Movements:** - **Phase 5:** Additional left turns and through movements. - **Phase 6:** Additional pedestrian movements. **Symbols Legend:** - **Phase Number:** Identified as numbers inside circles. - **Arrows:** - Solid arrows indicate **protected movements** for vehicular traffic. - Dotted arrows denote **permitted movements** amid protected phases. - Dotted 'T' shapes suggest pedestrian movements. **Question:** "In this ring and barrier diagram, what sequencing is used for the protected left turns?" - **Options:** - Lead-lead - Lead-lag - Lag-lag - None The correct answer, as indicated, is **none**. This implies that the given diagram does not fit into the common sequences like lead-lead, lead-lag, or lag-lag concerning protected left turns.
Transcribed Image Text:### Ring and Barrier Diagram for Traffic Control **Diagram Explanation:** The diagram illustrates a ring and barrier system used to manage traffic signals at an intersection with a major and minor street. This system is divided into six phases across two rings and two barriers. - **Rings and Barriers:** - **Major Street (Ring 1):** - **Phase 1:** Allows left turns and through traffic from the left side. - **Phase 2:** Allows left turns and through traffic from the right side. - **Minor Street (Ring 2):** - **Phase 3:** Allows left turns and through traffic from the left side. - **Phase 4:** Allows left turns and through traffic from the right side. - **Barriers:** - Barrier lines separate phases to prevent conflicting movements across the intersection. - **Phases for Pedestrian Movements:** - **Phase 5:** Additional left turns and through movements. - **Phase 6:** Additional pedestrian movements. **Symbols Legend:** - **Phase Number:** Identified as numbers inside circles. - **Arrows:** - Solid arrows indicate **protected movements** for vehicular traffic. - Dotted arrows denote **permitted movements** amid protected phases. - Dotted 'T' shapes suggest pedestrian movements. **Question:** "In this ring and barrier diagram, what sequencing is used for the protected left turns?" - **Options:** - Lead-lead - Lead-lag - Lag-lag - None The correct answer, as indicated, is **none**. This implies that the given diagram does not fit into the common sequences like lead-lead, lead-lag, or lag-lag concerning protected left turns.
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