Working with Trips and Legs

Each TripPattern consists of one or more Leg messages. Legs describe individual travel segments — walking, waiting, or transit rides.

Leg Types

• TransitLeg — a bus, train, metro, or ferry journey.
• NonTransitLeg — walking or biking segments.
• WaitingLeg — idle time between connections.
• FlexibleLeg — on‑demand transport (e.g., shared shuttle).

Example rendering logic

request.js

  function summarizeTrip(t) {
    const header = `🕒 ${hhmm(t.aimedStartTime)} → ${hhmm(t.aimedEndTime)} • ${t.duration}m • ${t.transfers} transfers`;
    const legs = t.legs.map(l => {
      if (l.transitLeg) return `🚆 ${l.transitLeg.line?.name}`;
      if (l.nonTransitLeg) return `🚶 ${(l.distance/1000).toFixed(1)} km`;
      if (l.waitingLeg) return `⏱️ wait ${hhmm(l.waitingLeg.startTime)} → ${hhmm(l.waitingLeg.endTime)}`;
      if (l.flexibleLeg) return `🚐 on-demand from ${l.flexibleLeg.fromPlace?.name}`;
    });
  return [header, ...legs].join('\n');
}

This formatting helps visualize how trips progress from start to destination.