Cable Car Capacity & Throughput Calculator
Enter riders per car, car spacing, line speed, and an expected load factor to estimate headway, cars per hour, and riders per hour for an aerial ropeway or gondola line.
Throughput
Why small, frequent cabins can out-carry big, rare ones
A ropeway’s hourly capacity is really a trade between how many people each car holds and how often a car goes by. A monocable detachable gondola runs many small cabins close together at a short headway; a large-cabin aerial tramway runs just one or two cars per direction, spaced far apart, but each one carries dozens of riders at once. Both approaches can hit similar riders-per-hour totals from very different equipment.
This calculator applies the same arithmetic planners use at a first pass: work out the headway from spacing and speed, convert that to cars per hour, then multiply by riders per car and an expected load factor to get a realistic throughput figure.
Frequently Asked Questions
What is headway on a cable car or gondola line?
Headway is the time gap between one car passing a fixed point and the next one arriving — the spacing between cars divided by the line speed. Shorter headway means cars arrive more often, which is how a detachable gondola with many small cabins can move as many people per hour as a tramway with two large cabins running further apart.
How is riders-per-hour worked out?
Multiply cars-per-hour (3,600 seconds divided by the headway in seconds) by the riders each car carries. That gives the theoretical maximum throughput at full capacity; multiplying again by an expected load factor — the share of seats or standing room actually filled on an average trip — gives a more realistic planning figure.
Why does load factor matter so much?
Off-peak, a gondola cabin rated for eight riders might carry three or four on average, so the practical throughput can be well under the rated maximum. Planners usually design around the maximum for the busiest hour of the busiest day, then use a lower expected load factor for everyday capacity and revenue estimates.
Does this account for loading delays at the station?
No — this is a steady-state line-capacity estimate assuming cars keep moving at a constant headway. Real systems can be limited instead by how fast people can board and disembark at the terminal, especially on a fixed-grip system that must slow or stop for loading; that station-side limit is a separate calculation from the line capacity shown here.
Educational planning estimate only. Real-world throughput also depends on station dwell time, loading efficiency, weather holds, and the operator’s safety spacing rules.