Line Mobility — Network Capacity Calculator

Station (O/D) Junction

Drag nodes to reshape. Lengths are fixed once drawn; the layout settles toward straight lines. Click a line to set its speed.

Selection

Nothing selected

Vehicle & fleet

Vehicle length (m)

Passengers / vehicle

Nose-to-tail gap1.0 s fixed

Speed units

Default line speed (mph)

— Line capacity = 3600 ÷ (1s + vehicle length ÷ speed) vehicles/hr, × passengers. Set each line's speed by clicking it.

Network parameters

Capacity display

Lock stations in place

View

Trip length auto—

Empty-vehicle fraction

30% empty

Scroll to zoom · drag the background to pan. Distances are fixed — zoom is visual only.

Capacity result

Max trips / hour

—

volume bound · (1−empty)·Σcᵢℓᵢ ÷ trip length

—

Σ cᵢℓᵢ (cap·km/h)

—

Avg O/D dist (km)

—

Tightest line

—

Total guideway (km)

Directional max-flow (min-cut)

From

Point-to-point capacity

—

Select an origin and destination, then compute. The limiting cut is highlighted in red.

Networks

Rule of thumb: max trips ≈ (1−empty)·Σcᵢℓᵢ / d̄. The volume bound is the ceiling if demand is spread evenly; the directional max-flow tool shows where a specific origin→destination is choked. A junction can't discharge more than it takes in — imbalanced junctions are flagged.