INFLUENCE OF GEOMETRIC FEATURES ON CAPACITY AND CAPACITY LOSS FOR TWO-LANE TWO-WAY RURAL ROADS
Amr Ali Shalkamy Mohammed;
Abstract
Key Words:
Two-lane Two-way highway; capacity; capacity loss; geometry data; traffic data; passenger car unit; regression analysis.
Summary:
Studying the relation between different geometric features and roadway capacity is very important and can lead to significant improvements in the planning and design stages. The main objective of this research is to model the relation between the different geometric features of the horizontal alignment with the capacity of tangent and curved elements of two-lane two-way highways and, more specifically, to model the capacity loss between tangent and curved elements. Traffic and geometry data were collected from six rural two-lane two-way sites on Benisuif - Assiut Agricultural Road in Egypt. Regression analysis was performed to show the relation between different geometric features with capacity and capacity loss between tangents and curves. In addition, analysis was done to relate passenger car unit (PCU) values with the different geometric features. The resulting models are useful for optimizing geometric design on two-lane two-way highways from the capacity point of view to provide a consistent and flowing highway at a suitable level of service, avoiding significant capacity loss on sharp horizontal curves.
Two-lane Two-way highway; capacity; capacity loss; geometry data; traffic data; passenger car unit; regression analysis.
Summary:
Studying the relation between different geometric features and roadway capacity is very important and can lead to significant improvements in the planning and design stages. The main objective of this research is to model the relation between the different geometric features of the horizontal alignment with the capacity of tangent and curved elements of two-lane two-way highways and, more specifically, to model the capacity loss between tangent and curved elements. Traffic and geometry data were collected from six rural two-lane two-way sites on Benisuif - Assiut Agricultural Road in Egypt. Regression analysis was performed to show the relation between different geometric features with capacity and capacity loss between tangents and curves. In addition, analysis was done to relate passenger car unit (PCU) values with the different geometric features. The resulting models are useful for optimizing geometric design on two-lane two-way highways from the capacity point of view to provide a consistent and flowing highway at a suitable level of service, avoiding significant capacity loss on sharp horizontal curves.
Other data
| Title | INFLUENCE OF GEOMETRIC FEATURES ON CAPACITY AND CAPACITY LOSS FOR TWO-LANE TWO-WAY RURAL ROADS | Other Titles | تأثير الخصائص الهندسية على سعة الطريق القصوى والفقد فى السعه للطرق الخلوية ذات الحارتين للإتجاهين | Authors | Amr Ali Shalkamy Mohammed | Issue Date | 2015 |
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