On-Time Performance in Live Map

A vehicle’s on-time performance (or schedule adherence) in the Live Map product is calculated as the vehicle’s expected arrival time at the next stop. A vehicle’s “on-time performance” color on the Live Map is determined by on-time performance parameters that are specific to your agency. For example, your on-time performance standards could be 1 minute early / 4 minutes late – meaning that vehicles are considered "on-time" if they are less than 1 minute early and less than 4 minutes late, according to the schedule. 

This differs from on-time performance calculations displayed in the On-Time Performance product, which are based on the observed departure times from the stops or timepoints as compared to the schedule.

How to Determine On-Time Performance in Live Map

Vehicles are color-coded by on-time performance in the dashboard:

• “early” is red
• “on-time" is green
• “late” is yellow

Also, to help you quickly spot very late or very early vehicles, the size of the vehicle's circle will increase if it is either very early or very late. If you ever want to know exactly how ahead or behind of schedule a vehicle is, you can click on it and look at the "Adherence" field:

How does Swiftly make these specific predictions for "adherence"?

The Swiftly platform considers a combination of factors to generate the vehicle’s schedule adherence in the Live Map, which includes:

• historical data on how long it has taken vehicles to go from stop to stop (travel times)
• current conditions, such as speed and current location
• A vehicle's schedule adherence at the most recently departed stop

These factors allow Swiftly to create very accurate predictions of when vehicles will arrive at forthcoming stops, and then calculate the current schedule adherence.

Stop Times v.s. Timepoints

All schedule adherence calculations will display the vehicle’s expected arrival time to the next stop unless the vehicle’s next stop is an operational timepoint. For stops that are designated as operational timepoints, schedule adherence calculations will be based on the vehicle’s expected departure times, and not expected arrival.  If the next stop is designated as an operational timepoint in the GTFS, the system will assume the vehicle will wait there until its scheduled departure time.