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Design of horizontal and vertical alignment, superelevation, sight distance, and grades is most affected by-
- a)Width of the vehicle
- b)Length of the vehicle
- c)Height of the vehicle
- d)Speed of the vehicle
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
Design of horizontal and vertical alignment, superelevation, sight di...
Speed of vehicle is only involved as a variable while the other three parameters are taken as per IRC recommendation. Thus speed which contributes a major role.
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Hence, the correct option is (D)
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Design of horizontal and vertical alignment, superelevation, sight di...
Impact of Speed on Road Design
The design of horizontal and vertical alignment, superelevation, sight distance, and grades is crucial for ensuring road safety and efficiency. Among various factors affecting these designs, the speed of the vehicle stands out as the most significant.
1. Horizontal Alignment
- The curvature of roads must accommodate vehicles traveling at higher speeds.
- Tighter curves can pose risks, necessitating gentler curves for safe navigation.
2. Vertical Alignment
- The steepness of hills and valleys affects how vehicles can ascend or descend safely.
- High-speed vehicles require gradual slopes to maintain control and prevent accidents.
3. Superelevation
- This refers to the banking of the road at curves to counteract centrifugal force.
- Higher speeds demand more superelevation to keep vehicles stable through curves.
4. Sight Distance
- Adequate sight distance is essential for drivers to perceive and react to obstacles or changes in the road.
- As speed increases, so must the sight distance, allowing drivers sufficient time to respond safely.
5. Grades
- Steep grades can impact vehicle performance, especially when accelerating or braking at high speeds.
- Gradual grades are essential for maintaining momentum and ensuring safety.
Conclusion
In summary, while the width, length, and height of vehicles are important, speed is the primary factor influencing the design of road elements. Higher speeds necessitate careful consideration of all aspects of road design to enhance safety and performance, making speed the critical driver of these design choices.
The design of horizontal and vertical alignment, superelevation, sight distance, and grades is crucial for ensuring road safety and efficiency. Among various factors affecting these designs, the speed of the vehicle stands out as the most significant.
1. Horizontal Alignment
- The curvature of roads must accommodate vehicles traveling at higher speeds.
- Tighter curves can pose risks, necessitating gentler curves for safe navigation.
2. Vertical Alignment
- The steepness of hills and valleys affects how vehicles can ascend or descend safely.
- High-speed vehicles require gradual slopes to maintain control and prevent accidents.
3. Superelevation
- This refers to the banking of the road at curves to counteract centrifugal force.
- Higher speeds demand more superelevation to keep vehicles stable through curves.
4. Sight Distance
- Adequate sight distance is essential for drivers to perceive and react to obstacles or changes in the road.
- As speed increases, so must the sight distance, allowing drivers sufficient time to respond safely.
5. Grades
- Steep grades can impact vehicle performance, especially when accelerating or braking at high speeds.
- Gradual grades are essential for maintaining momentum and ensuring safety.
Conclusion
In summary, while the width, length, and height of vehicles are important, speed is the primary factor influencing the design of road elements. Higher speeds necessitate careful consideration of all aspects of road design to enhance safety and performance, making speed the critical driver of these design choices.
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Design of horizontal and vertical alignment, superelevation, sight distance, and grades is most affected by-a)Width of the vehicleb)Length of the vehiclec)Height of the vehicled)Speed of the vehicleCorrect answer is option 'D'. Can you explain this answer?
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