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Designing and plotting a curve using field data requires precise calculations and execution. A horizontal curve with a radius of 200 meters and an intersection angle of 20 degrees is established using the method of perpendicular offsets from the long chord. The long chord, which spans between the curve's endpoints, is calculated to be 69.46 meters in length. To maintain accuracy in plotting, intervals of 3 meters are selected along the chord.The engineer determines the offset distances for each...
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Vertical curves are essential in roadway design because they provide smooth transitions between varying roadway grades. Designing vertical curves involves calculating intermediate elevations and identifying the curve's highest or lowest point, which is essential for optimal roadway performance.Intermediate elevations on a vertical curve are determined using the tangent offset method. This method considers the initial elevation at the start of the curve, the grades, and the curve's geometry. The...
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Offset curves: An application in road simulation.

Aqsa Rasheed1, Uzma Bashir1

  • 1Department of Mathematics, Lahore College for Women University, Lahore, Pakistan.

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Summary
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This study introduces a new digital map routing method using aggregated data to create smooth road centerlines. This framework enhances route planning for intelligent transportation systems by incorporating essential real-world details.

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Area of Science:

  • Computer Science
  • Geographic Information Science

Background:

  • Intelligent Transportation Systems (ITS) drive demand for advanced digital maps.
  • Current online maps lack crucial data (traffic, construction) for realistic routing.
  • Autonomous route identification requires more detailed map information.

Purpose of the Study:

  • To develop a novel route planning method for digital maps.
  • To create a framework for estimating geometrically smooth road map centerlines.
  • To enhance the accuracy and realism of digital map routing.

Main Methods:

  • Data aggregation and reuse for robust routing frameworks.
  • Analysis of collected data to estimate road centerline geometry.
  • Generation of offset curves to create new routes and alternative lanes.

Main Results:

  • A framework for generating geometrically smooth road map centerlines was established.
  • The method facilitates the creation of new routes and alternative lanes.
  • Empirical results demonstrate the effectiveness of the proposed approach.

Conclusions:

  • The developed method offers a robust solution for digital map route planning.
  • This approach improves the integration of real-world data into routing algorithms.
  • The framework supports the advancement of Intelligent Transportation Systems.