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Lec 9, Ch4, pp.115-121: Travel time and delay studies

Lec 9, Ch4, pp.115-121: Travel time and delay studies. Know how travel time and delay study results can be applied Know definition of terms related to travel time and delay studies Know what types of travel time studies are available

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Lec 9, Ch4, pp.115-121: Travel time and delay studies

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  1. Lec 9, Ch4, pp.115-121: Travel time and delay studies • Know how travel time and delay study results can be applied • Know definition of terms related to travel time and delay studies • Know what types of travel time studies are available • Understand how the moving-vehicle technique is conducted and its data reduced

  2. What we cover in class today… • What are travel time and delay studies • How are they used? • Definition of terms • Methods requiring a test vehicle • Methods not requiring a test vehicle • Learn how to reduce data collected by the Moving-Vehicle technique

  3. Travel time and delay studies * Determines the amount of time required to travel from one point to another on a given route. Often, information may also be collected on the locations, durations, and causes of delays • Indicate the level of service • Identify problem locations

  4. Applications of travel time and delay data Many uses… Efficiency check Collection of rating data Problem location identification Model calibration Evaluation of performance before and after improvement Collect data for economic analysis (user costs) See page 116

  5. Definition of terms

  6. Methods Methods requiring a test vehicle: West X Y Y X East

  7. Methods (cont) Methods not requiring a test vehicle: License-plate method NG for a grid network – too many routes Use of ETC for freeways

  8. Moving-vehicle technique West X Y Y X East Volumes Average travel times (Review Example 4-6)

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