← Back to the workshopMobility / a research exploration

DYNAMIC TRANSIT

Your carriage.
Your destination.
Fewer stops.

What if your metro only stopped
where you needed it to?

Tell your phone where you’re going. Follow your boarding zone. Step into a carriage with people heading your way—and pass the stops you don’t need.

Follow a passenger
01 Choose your destination02 Follow your zone03 Ride past the other stops
THE IDEA IN ONE MOVEMENT
Concept animation
One carriage stops. The rest keep going.Above, the whole train stops at Museum. Below, the orange carriage starts in the middle. The front pair accelerates to open a gap. The middle carriage leaves for Museum, then the rear pair accelerates to rejoin. Through carriages keep at least their cruising speed. After boarding, it leaves promptly, accelerates along the exit ramp and joins in front of a later train. Illustrative formation changes, not a tested coupling mechanism.Today, everyone stops.Even if only one carriage needs this station.Old TownStartMuseumStation DRiversideFurther alongWhat if only their carriage stopped?Museum · local platform DOld TownRiverside →
Today: everyone stops.Old TownMuseumRiversideDynamic: one carriage stops.Old TownRiverside →Museum · platform D
The middle carriage stops at Museum. The other four continue together.Formation concept · distances and timing are illustrative.

Through carriages Stopping carriage

A transport concept by Paul Beglin. Independently driven carriages share the fast lane, then separate for their own stops. The animations show the vision; the research tests whether it works.

01 / THE PASSENGER EXPERIENCE

Choose a destination.
The rest follows.

Follow one journey from your phone to the platform, then all the way to your stop. Four steps. One carriage.

ONE PASSENGER. FROM YOUR PHONE TO YOUR STOP.Illustrative journey

Where are you heading?

Enter your destination. The system takes care of the stopping pattern.

d/ dynamic transit •••

FROM OLD TOWN

YOUR DESTINATIONRiversideWe’ll find the carriage for your journey.
Old TownRiverside
One destination. One clear instruction.

TRY IT · TAP YOUR DESTINATION

You are at Old Town

You choose the place. You don’t need to work out which service to take.

Example journey: Old Town → Riverside.

Your stop is the commitment. The system groups compatible journeys before you board. Your carriage keeps its promised destination while the network adapts around it.

Guidance for everyone. Platform displays, staff support and accessible kiosks must provide the same experience without requiring a phone or precise location sharing.

02 / THE CITY IN MOTION

Now imagine
a whole network.

All those stops add up. Watch several trains move through central Paris: whole trains stopping together, or carriages serving a station while the fast lane keeps flowing.

Central Paris 57 carriages each · Same cruising speed1810Selected stops · illustrated traffic

A fixed stopping pattern

Every carriage waits at every station.

LA SEINELUXEMBOURGÎLE DE LA CITÉTUILERIESLE MARAISConcordeLouvre–RivoliChâteletSaint-PaulBastilleGare de LyonMadeleineOpéraRichelieu–DrouotStrasbourgSaint-DenisRépubliqueFilles du CalvaireChemin VertVaneauSèvres–BabyloneMabillonClunyLa SorbonneCardinal LemoineGare d’AusterlitzN
— carriages moving— boarding

Choose a station to watch its stopping pattern.

Carriages with their own stops

Only the carriages serving this stop slow down.

LA SEINELUXEMBOURGÎLE DE LA CITÉTUILERIESLE MARAISConcordeLouvre–RivoliChâteletSaint-PaulBastilleGare de LyonMadeleineOpéraRichelieu–DrouotStrasbourgSaint-DenisRépubliqueFilles du CalvaireChemin VertVaneauSèvres–BabyloneMabillonClunyLa SorbonneCardinal LemoineGare d’AusterlitzN
— carriages moving— boarding

Choose a station to watch its stopping pattern.

Look closer
Zoom in, then drag to explore
WATCH THE ORANGE CARRIAGES

Leave a train. Stop at the platform. Accelerate back into the flow. A new group, the same carriage. More of the fleet spends its time carrying people forward.

01 Peel off02 Board03 Rejoin
What this comparison shows

Selected stations are spaced out so the movements stay readable. Both sides use the same carriage fleet, the same cruising speed and the same boarding time at each station. In fixed service, a three-carriage train stops together. In the dynamic illustration, one carriage serves each stop; the other two continue.

Departures are timed so a stopping carriage can join a later group. Traffic circulates continuously, with the return outside this cropped view. The counters describe the carriages in this illustration, including those just beyond the edge. They are not actual Paris service or measured passenger capacity. Extra station lanes are hypothetical; safe spacing, junctions, demand and infrastructure need the separate operational simulation.

Station positions: Île-de-France Mobilités GTFS ↗, retrieved 10 October 2026, Licence Mobilité ↗. Map curves and the background are drawn schematically.

03 / THE PHYSICAL NETWORK

A place to stop.
A path to pass.

A carriage leaves the fast flow before slowing down. Passengers board on a separate lane, while the rest of the network keeps moving. Here are two ways to make room for that.

Two candidate layouts for express and stopping movementsA stopping module moves off the express track, brakes on a dedicated approach, stops at a platform, accelerates, waits for a protected slot and merges. Choose a station bypass loop or continuous parallel express and local tracks. Reverse-direction tracks are additional infrastructure.EXPRESS · THROUGH MOVEMENTS →Steer between lanes along the corridorLeave the fast laneBraking approachAcceleration sectionRejoin the flowSTATION PLATFORMreserved gap

Swipe or scroll to explore the diagram →

Stop independently. Re-enter only when a protected gap is available.Local loops concentrate extra track around stations. Their approaches must be long enough for comfortable braking and acceleration.
01 Reserve movement02 Brake & stop03 Accelerate04 Merge into a gap

Station bypass loops

Additional track is concentrated around each station. The loop needs a protected entrance, platform, braking approach and enough acceleration distance to rejoin the express flow.

Continuous fast + local lanes

Two lanes run continuously in each direction. Rubber-tyred carriages steer between them, like vehicles changing lanes. The departure point can adapt to the journey; it is not tied to a fixed rail switch.

How do you change lanes comfortably?

Start the turn early. Make the curve gradual. Slow down on the local lane, with enough room to brake before the platform. Speed, curve radius and jerk—the rate acceleration changes—all shape the route.

Those are engineering requirements to test. This drawing explains the movement; it does not specify a validated speed or turning radius.

04 / THE VEHICLES

A full-size carriage.
Independent movement.

Shared transport, with room to sit, stand and move. Each driverless carriage has its own power and brakes, so it can travel with the group—and leave when its passengers need to stop.

A CARRIAGE, WITH THE FREEDOM TO LEAVE THE TRAINVehicle study
An independently powered, driverless metro carriageA cream and forest-green carriage with two separate double doors, evenly spaced windows, rubber tyres and an illuminated destination display. Each carriage has its own propulsion, brakes and control.B · RIVERSIDEDYNAMIC / 0201020304Metro-sized. Level boarding. A shared journey, with room for everyone.

01Drives itselfOnboard control

02Powers itselfIndependent traction

03Stops itselfIts own braking

04Travels togetherCoordinated formations

One vehicle, many journeys. Each carriage can follow its own stopping plan.Design illustration. Physical coupling remains an engineering study.
How would the carriages travel together?
FIRST MODEL

Independent modules

Test destination-aware grouping without requiring physical coupling.

NEXT EXPERIMENT

Virtual platoons

Coordinate independent modules at an explicitly modeled safe separation.

ENGINEERING RESEARCH

Mechanical coupling

Explore joining and separating, with potential aerodynamic savings that still need measurement.

Standing capacity

A high-capacity interior for busy services.

More seated space

A comfortable option for longer journeys.

Accessible space

Level boarding, circulation and priority seating throughout the fleet.

Logistics modules

A later, separate study of cargo vehicles and shared-network scheduling.

05 / THE COMPUTATIONAL IDEA

Same destination.
A smarter way there.

Think of how Waze finds another route when a road gets busy. A connected transit network could do the same for whole carriages, spreading journeys across the routes with room to carry them.

Same destination. More than one way to get there.Two routes connect Old Town to Airport. When City Centre is busy, the next departures can be shared between City Centre and the quieter Riverside route, while preserving each carriage’s destination.More carriages, less roomOld TownAirportCity CentreRiversideSame destination.A route that adapts.
NEXT DEPARTURES → AIRPORT

Room on the direct route.

Both carriages can travel through City Centre. There’s space for their journeys.

Carriage 1Via City Centre
Carriage 2Via City Centre

Try “City centre busy” to see the next departures use both routes.

Route the whole network, while keeping each passenger’s destination.Illustrative dispatch choices, not live demand or measured travel times.

The internet-inspired part:give each carriage a destination, then coordinate its path through the network. Passengers keep their destination; the system adapts the route.

01 / PASSENGER

Request a journey

Origin, destination, accessibility needs and a boarding commitment.

02 / OPTIMIZER

Group & schedule

Assign capacity and stop patterns to reduce total passenger journey time.

03 / LOCAL PROTECTION

Authorize movement

Reserve track, protect switches and merges, and enforce safe separation.

Optimize the whole journey:
walk + wait + board + ride + transfer + walk

06 / THE SIMULATION STUDIO

Test the idea.
Observe the network.

The simulator now has its own application. Explore Paris lines 1, 6, 8 and 10 on a street map, replay vehicle movements, inspect passenger flows and compare four services with the same requests.

Choose a synthetic corridor, Paris station entries with hourly profiles, or London's Victoria line with TfL origin–destination data. The studio exposes waiting, completed and unfinished journeys alongside every comparison.

Open the independent simulator ↗

RESEARCH MODEL · PRIVATE TAILSCALE PREVIEW

Paris destinations and line allocation remain inferred. London uses adjusted typical-day line journeys; its clock-bin convention still needs current-year confirmation. Vehicle inventories, express infrastructure and signalling remain research assumptions. Earlier batch results are superseded following dispatcher corrections; current comparisons live in the studio.

07 / FROM VISION TO EVIDENCE

Start small.
Keep the question big.

The independent studio starts with reproducible corridors and documented demand scenarios. The next task is to challenge its assumptions and validate the model before drawing conclusions about a real network.

THE QUESTION THAT MATTERS

Does skipping stops save more time than grouping, boarding and safe merging add—while carrying the same demand?

NOW / EXPLAIN THE MECHANISM

A visible concept

Destination assignments, two track layouts and clear modular vehicle movements. The page you are exploring is this first step.

NOW / CORRIDOR SIMULATION

A genuine simulation

Replay identical passenger requests through all-stop trains, fixed local/express service and dynamic modules. Model finite fleets, waiting, dwell and protected merges.

NOW / SOURCE-INFORMED SCENARIOS

A reality check

Use documented distances and demand assumptions for a selected corridor. Separate real geography from hypothetical express/local infrastructure.

LATER / ENGINEERING & CITY SCALE

A feasible network?

Investigate signalling, geometry, coupling, resilience, costs and evacuation. Expand to connected corridors only once the small model is credible.

What the simulator must reveal

Average, median and high-percentile total journey times; waiting and unfinished trips; throughput, occupancy, empty vehicle movement and merge queues. Include passengers whose journeys become worse.

Compare equal demand and explicit fleet and infrastructure budgets. A conventional local/express service may outperform dynamic dispatch in some conditions. That is a useful result.

Test low demand, directional rush-hour peaks, dispersed destinations, rare trips and failures. The animations on this page use illustrative geometry and fixed example groups; no operational performance results are claimed.

The network adapts
to where people want to go.

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