Île-de-France · Paris

Paris, already in Polycity.

Paris's streets, its lines and its residents, simulated through a whole weekday.

When part of the city closes

When a city needs to respond quickly.

Unexpected events can require authorities to restrict access to streets, public spaces and transport stations, sometimes with very little notice.

How can a city understand the impact on mobility, identify alternative arrangements and make informed decisions quickly?

Polycity allows authorities to simulate these restrictions, anticipate their consequences and evaluate response options before implementing them.

17 October 2026, temporary closure of 25 metro and RER stations

On the police prefecture's order, RATP closed 25 metro and RER stations across Paris, from Charles de Gaulle–Étoile to Bastille. Trains passed through without stopping, and passengers had to adjust their journeys.Closed area · Remove stop

Rus Tourism News, Oct 2026
19 to 27 October 2026, temporary overnight restrictions around République

The police prefecture restricted access from 11 pm to 6 am in designated areas around République and Les Halles. The area changed over the period, covering République alone on the final night, when République station was not served on lines 3, 5, 8, 9 and 11.Closed area · Hours

Sortiraparis, Oct 2026 · Sortiraparis, 26 Oct 2026

A Closed area drawn round Place de la République in the scenario editor, with the streets, stops and stations it shuts — **Place de la République, cordoned off**Every street, stop and station inside, closed for the evening.

The metro lines the cordon cuts back, each with the stop it turns back at — **Metro lines 3, 5, 8, 9 and 11 cut back**Each turns back at the last stop before the cordon.

Paris today

What is on the table in Paris.

The Périphérique at 50 km/h

Limited to 50 km/h since 1 October 2024, with its left lane kept for car sharing and buses at peak hours.Set speed limit · Reallocate lane

Ville de Paris
Paris Centre's limited traffic zone

Through traffic barred across the 1st to 4th arrondissements since November 2024. The city reports 8% less traffic in the zone, with fines postponed into 2026.Set allowed modes · Modal filter

Sortiraparis, Sep 2025
The Grand Paris low-emission zone

Older cars, Crit'Air 3 and above, barred inside the A86, with no fines through 2026 while Parliament debates the zones' future.Low-emission zone · Vehicle class access

Automobile Propre
Express buses and a Rivoli bus lane

Mayor Emmanuel Grégoire, elected in March 2026, plans 15 express bus lines with priority at junctions, a protected bus lane on rue de Rivoli, and kerbside parking given over to trades, carers and deliveries.New line · Transit signal priority · Set allowed modes · Kerb use

Sortiraparis, 2026
Plan Vélo 2027 to 2032

Unveiled on 14 October 2026: 140 km of new cycle lanes and 420 more junctions made safe, in a city where cycling carries 11% of trips.Cycle lane · Cycle parking

Affiches Parisiennes, Oct 2026
A year of rail works

Île-de-France Mobilités is spending about €3.8 billion on its network in 2026, with closures on RER A, B, C and D and metro line 8, and the links for Grand Paris Express lines 15 to 18.Remove stop · Reroute line

Railway Pro, 2026

The copy of Paris

Paris, built from its own data.

Paris in Polycity's scenario editor, its zones over the street map — **Every street, stop and zone of Paris**Ready for a planner's first change.

The day in motion07:30 to 08:30

The whole city, one morning hour

Streets: OpenStreetMap, Île-de-France
Timetables: Île-de-France Mobilités
Zones: Paris's 80 quartiers
Residents and jobs: 2021 census grid
How people travel: EMTA Barometer 2025

The simulated day

A weekday in Paris.

Results · Vehicles on the street06:00 to 23:00

The day on every street, hour by hourEach street coloured by the cars on it, from the first rush to the last.

The busiest street in 3D08:00

Paris's busiest street at eight

The busiest street in 3D19:30

The same street, lamps lit

Paris in Polycity

Every plan on the table, on Paris's own map.

The Streets tools open over Paris in the scenario editor — **The Périphérique and Paris Centre**Speed limits, lanes, closures and access, street by street.

The Transit tools open over Paris in the scenario editor — **Express buses and the Rivoli bus lane**New lines, stops, frequencies, timetables and fares.

The Junctions tools open over Paris in the scenario editor — **Priority for the express buses**Signal timing, turns and bus priority at every junction.

The Kerbside tools open over Paris in the scenario editor — **Parking for trades, carers and deliveries**Kerb use, parking zones, supply and prices.

The Pricing tools open over Paris in the scenario editor — **The low-emission zone inside the A86**Zones, the vehicles they admit, and road charges.

The Cycling tools open over Paris in the scenario editor — **Plan Vélo's new lanes**Cycle lanes, parking and shared bikes.

The platform at work

How a plan is tested.

Filmed on Paris.

Scenario editorParis

Every change, on one mapA planner's draft with all its changes, then one change in its own window.

Agent · a change talked through on the mapParis

Talk to Agent. Watch the map change.

One resident's dayParis

Every simulated day becomes data.

ResultsParis

Every vehicle, every street.

ComparisonParis

One plan against today. Who gains, who loses.

A junction studyParis

One junction, second by second.

Next for Paris

Paris's bus plan, tested.

Paris's first simulated day shows the city is built. The figures come from a full study of the plan on the table.

01Today's Paris, simulated in full.
02The 15 express bus lines and the Rivoli bus lane, drawn on Paris's map.
03Both days on the same residents, compared: who gains, who loses, and what it costs.

Back to the map

Street maps © OpenStreetMap contributors · Map tiles OpenFreeMap © OpenMapTiles · Timetables from Île-de-France Mobilités

Paris, already in Polycity.

When a city needs to respond quickly.

17 October 2026, temporary closure of 25 metro and RER stations

19 to 27 October 2026, temporary overnight restrictions around République

What is on the table in Paris.

The Périphérique at 50 km/h

Paris Centre's limited traffic zone

The Grand Paris low-emission zone

Express buses and a Rivoli bus lane

Plan Vélo 2027 to 2032

A year of rail works

Paris, built from its own data.

A weekday in Paris.

Every plan on the table, on Paris's own map.

How a plan is tested.

Paris's bus plan, tested.