Utilization is revenue service hours divided by (vehicles required * span of service). It is a measure of the proportion of vehicle hours that are dedicated to operating revenue service (including layover). Utilization is calculated for each row, or “service window”, displayed in the frequency-based schedule of a line.
Here's an example:
We have three trips at 40 mins each equating to 120 minutes of trip time. Layover is set to zero. Therefore, our revenue service is 120 minutes.
The overall span of time that these trips operate is from 6:00 to 7:40 (start time of first trip to stop time of last trip) which is 100 minutes. We need two buses to run this service. 100 mins x 2 buses = 200 minutes.
Therefore, 120 mins / 200 mins = 0.60 or 60%
In summary, these two buses are “utilized” for 60% of the time they’re on the road for the 6:00 - 7:00 service window.
Remember, utilization in Remix Planning is not an indication of blocking efficiency. It is meant as an indicator of whether or not the route is a candidate for adjustments, such as interlining and increased frequency, that might improve service without requiring additional vehicles.
Ways to think about Remix’s utilization percentage to maximize your bus resources:
- increase frequency, or adjust trips in the Timetable to use buses more efficiently.
- extend your route to a new neighborhood.
- as a red flag. If buses are expected to be running revenue service continuously, you would expect to see a high utilization percentage.
- interlining. If you know a route is interlined, you would expect to see a low utilization percentage.