# description
A real-time message containing predicted departure times for vehicles at a stop, as used in VDV real-time standards.

# properties.stopRef.description
Reference to the stop for which departures are reported

# properties.lineRef.description
Reference to the line departing from this stop

# properties.delaySeconds.description
Delay in seconds relative to scheduled departure

# properties.validity.description
Time period during which the alert is active