Example: Fleet Size Calculation
Example
Problem Statement:
A city is planning a new Bus Rapid Transit (BRT) route. The estimated round-trip running time (including all station dwell times) is 50 minutes. The agency policy dictates a recovery/layover time equal to 10% of the running time at the end of each round trip.
If the agency wants to provide a high-frequency service with a bus arriving every 10 minutes (headway), calculate the minimum number of buses required to operate this route. Also, determine the actual resulting headway if the schedule is perfectly adhered to.
Solution: Fleet Size Calculation
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Example: Transit Line Capacity
Transit capacity depends on the vehicle size, frequency, and maximum load factor.
Example
Problem Statement:
A bus rapid transit (BRT) line operates with articulated buses that have a seating capacity of 60 passengers. The transit agency permits a maximum load factor () of 1.25 during peak hours (allowing standees). Buses operate at a headway of 5 minutes. Calculate the hourly passenger capacity of this BRT line.
Given:
- Vehicle seating capacity () = 60
- Max load factor () = 1.25
- Headway () = 5 minutes
Step-by-Step Solution
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Example: Fleet Size Calculation
Determining the required number of vehicles to maintain a specific schedule.
Example
Problem Statement:
A bus route has a round-trip distance of 12 miles. The average operating speed (including stops) is 15 mph. Layover/recovery time at the terminals combined is 12 minutes per round trip. The required headway is 15 minutes. How many buses are needed to operate this route?
Given:
- Distance () = 12 miles
- Speed () = 15 mph
- Layover time = 12 minutes
- Headway () = 15 minutes
Step-by-Step Solution
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