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Knowledge
The chapter discusses the design of transition curves and setback distances essential for ensuring safe and comfortable vehicular navigation through road curves. The importance of transition curves in gradually shifting from straight road to circular curves while maintaining driver comfort and vehicle stability is emphasized. Additionally, the calculation of setback distances is detailed to prevent obstructions at horizontal curves and ensure proper sight distances.
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Sections
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16.pdfClass Notes
Memorization
What we have learnt
- Transition curves facilitat...
- Setback distances are cruci...
- Various types of transition...
Final Test
Revision Tests
What we have learnt
- Transition curves facilitate a smooth transition from straight to curved roadways.
- Setback distances are crucial for safety around curves to ensure adequate sight distance.
- Various types of transition curves exist, with spirals being the most preferable due to their mathematical and implementation ease.
Key Concepts
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Term: Transition Curves
Definition: Curves that allow for the gradual adjustment of vehicles from straight to circular paths, ensuring comfort and safety.
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Term: Setback Distance
Definition: The minimum distance required from the centerline of a curve to prevent obstructions affecting visibility.
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Term: Curve Resistance
Definition: The force exerted on a vehicle when it negotiates a curve, which can impact its stability and speed.