1st Numerical of Overtaking Sight Distance - Highway Geometric Design - Transportation Engineering 1

TL;DR

Calculate the overtaking side distance for two lane one-way traffic with a design speed of 100 km/h and an average acceleration of 0.9 m/s².

Transcript

hello students today we are going to solve first numerical of overtaking set distance question is given as calculate ost for two lane one-way traffic if design speed on road is 100 kilometer per hour and average acceleration of vehicle is 0.9 meter per second square it means that we need to calculate the overtaking side distance for two lane one-wa... Read More

Key Insights

• 👾 The overtaking side distance (osd) for two lane one-way traffic is calculated by adding d1 and d2, which are dependent on design speed, reaction time, minimum space headway, and average acceleration.
• 🐎 The design speed affects the value of vb, which is used in the calculations for d1 and d2.
• ⌛ The reaction time and acceleration values are important in determining the values of d1 and d2.
• 👾 The minimum space headway plays a role in calculating the value of d2.
• 🦺 The overtaking side distance (osd) is an essential measure for ensuring safe overtaking on roads.
• 🤒 The calculated overtaking side distance in this numerical is 327.55 meters.
• 😫 These calculations follow the guidelines set by the Indian Road Congress.

Questions & Answers

Q: What is the formula to calculate d1?

The formula to calculate d1 is 0.278 * vb * tr, where vb is the difference between the design speed (va) and 16 km/h, and tr is the reaction time (2 seconds).

Q: How is the value of d2 calculated?

The value of d2 is calculated using the formula 0.278 * vb * capital t + 2s, where vb is the difference between the design speed (va) and 16 km/h, capital t is the square root of 4s divided by acceleration, and s is the minimum space headway (22.8 meters).

Q: What is the formula for calculating the overtaking side distance (osd)?

The overtaking side distance (osd) is calculated by adding the values of d1 and d2 together.

Q: What are the given values in the numerical?

The given values in the numerical are: design speed (va) = 100 km/h, average acceleration = 0.9 m/s², reaction time (tr) = 2 seconds, minimum space headway (s) = 22.8 meters.

Summary & Key Takeaways

• The design speed on the road is 100 km/h and the average acceleration of the vehicle is 0.9 m/s².

• The value of d1 is calculated using the formula 0.278 * vb * tr, where vb is 84 km/h and tr is 2 seconds.

• The value of d2 is calculated using the formula 0.278 * vb * capital t + 2s, where vb is 84 km/h, capital t is 10.06 seconds, and s is 22.8 meters.