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A freeway segment has the following characteristics: Free flow speed of 65 mph; 3 lanes per...

A freeway segment has the following characteristics:

  • Free flow speed of 65 mph;
  • 3 lanes per direction;
  • Located in rolling terrain;
  • The traffic stream vehicle composition includes 12% trucks, 3% buses, and 85% passenger cars;
  • Directional peak-hour volume of 4080 vehicles, with 1200 vehicles arriving in the highest 15-minute flow-rate period.

Given these characteristics, calculate the analysis flow rate and determine the Level of Service (LOS) for the given peak hour conditions (write the letter corresponding to the LOS in the answer box).

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