Updated October 19, 2026

Pedro Correia / Unsplash
A Paris transit strike announces itself in small, ugly increments. A platform fills without emptying, a line status flips red on a phone screen, and a station agent waves commuters back toward the street. Residents and visitors land on the same question within minutes, and it shifts from which train to catch to whether any train will run at all. The reflex is to wait. People check an app every two minutes, reread the same disruption notice three times, and assume service will resume in time for a meeting, a dinner reservation, or a flight. Waiting costs more than it saves. Nobody standing on the platform knows whether trains return before lunch or stay parked for days, and the commuters who arrive on time stop refreshing and start moving.
The failure cascades. A stalled metro line pushes its passengers onto buses and RER trains that already run near capacity at rush hour, so a short hop turns into a long wait for a bus that pulls up full. Distances that look manageable on a map turn punishing once rain arrives or a meeting clock runs down, and the sidewalks around big interchanges fill with people doing the same arithmetic at the same moment. Shared bikes and scooters, a small convenience on an ordinary Tuesday, decide whether a person arrives at all, and every stranded rider on the block reaches for the same handful of them. What separates a normal trip from a strike-day one is the speed of the switch to another mode, and closing that gap takes preparation before the first line goes dark.
Bonjour RATP, the official trip-planning app of the Paris transit authority, keeps a standing set of recommendations on hand for these days. Its guidance sets out four moves — planning a route in advance, cycling, scootering, and walking — and frames each one as a working substitute for service that is not coming. The advice rests on the app's own network and fleet data, including the reach of the regional bike-path system and the shared vehicles its partners put on the street, and the scope reaches across Paris and the surrounding Ile-de-France region instead of the city core alone. The three options below come from the same page, and each answers a different part of the problem, from what to check before leaving home to what to do on foot when nothing else fits.
1. Cycling networks span thousands of kilometers

Illustration: Quartz
More than 8,720 kilometers of dedicated bike paths cross the Ile-de-France region, a web wide enough to stand in for a shuttered metro line across most of Paris and the suburbs beyond it. Riders who switch to two wheels on a strike day improvise nothing. Partnerships with Dott, Lime, and Vélib' put 30,000 self-service scooters and upward of 35,000 bikes within reach of one screen, so a commuter who finds the gates closed locates and books the nearest machine from a single app instead of opening three rental accounts in sequence.
Pricing stays flat and legible. One euro releases a shared bike or scooter, and the meter charges 25 cents for every minute in the saddle, while Vélib' sells access trip by trip or through a subscription for anyone facing several journeys across a long walkout. Predictable fares matter to a traveler recalculating a route under time pressure, who has enough to manage without an unknown charge landing on top of the lost hour.
Choosing pedals over a wait on a closed platform pays off past the trip itself. Steady cycling builds strength through the legs and abdomen, sharpens heart and lung function, and cuts the odds of chronic illness such as diabetes and hypertension, and it assists weight loss along the way. The same journey spares the greenhouse gases a car would have released, giving a forced detour a payoff that survives long after the dispute ends.
Four habits separate a safe ride from a risky one. A cyclist obeys lights, signs, and the rules of the road, keeps inside marked lanes wherever the city paints them, signals turns and stops by hand so drivers read the move before it happens, and watches everyone else on the street, pedestrians above all. Foot traffic deserves the closest watch near major stations, where crowds leaving halted lines fill the sidewalks and step into a lane without looking. Anyone who makes those four habits routine on ordinary days arrives at a strike with nothing new to learn, which leaves the route as the only question left to settle.
2. Walking routes track distance and emissions saved

Illustration: Quartz
Walking carries the short-distance legs of a strike day, and switching on geolocation in the trip-planning app turns a phone into a block-by-block guide across Paris and the wider Ile-de-France. A pedestrian receives directions from wherever the journey stalls, an advantage that peaks around interchange stations, where displaced crowds spill onto side streets a visitor has no reason to know. The app keeps a running count of distance walked and the carbon dioxide a traveler spares by leaving a car at home, so a walk the disruption forced ends with a number attached to it.
One tool covers the whole trip. A traveler midway through planning avoids opening a second map for directions on foot, and the saved step preserves minutes a shutdown has stolen. A rider who abandons a blocked line reads walking directions from the same screen that showed the closure. The location feature that steers someone on two wheels works the same on the pavement, so anyone changing modes halfway stays inside one interface from the first block to the last.
Nothing about a walk costs money. No unlock fee applies, no meter runs by the minute, and no vehicle needs parking at the far end. Feet become the obvious pick for anyone a few blocks from a destination. Time is the trade. Covering the same ground on foot takes longer than riding it, so walking earns its keep on the opening and closing stretches of a strike-day route more than across the long middle. A cross-city march consumes an afternoon.
The ecological case outlasts the walkout that prompted it. A walk standing in for a car journey erases the emissions of that journey in full, and the tally inside the app preserves the saving as a record once service returns. A commuter who repeats the choice gathers distance across months of ordinary days, not only the afternoons when a dispute shuts a line. A short walk at either end of a ride reaches doorsteps where no bike or scooter parks, making the pavement the piece that completes every other option.
3. Advance planning flags disruptions and alternate routes

Illustration: Quartz
A route search entered before departure gives a rider four answers at once. It names the disruptions sitting on the chosen line, maps the alternative paths around them, lists the next scheduled departures, and predicts how crowded each one will be. The transit authority's trip-planning app ties all four to the journey the traveler typed in, so the warning covers one trip instead of the whole network. Reading the result at a kitchen table costs less time than watching a status board refresh at a station entrance.
Crowding estimates turn a vague delay into a choice between two trains. A passenger who learns the next departure will run packed and the one behind it lighter can shift a start time by a few minutes and board with room to stand. Strike-day timetables squeeze more people into fewer services, which gives the estimate more weight than it carries on an ordinary weekday. Knowing which train to skip buys something a status update never offers.
A search that comes back empty still ends in a decision. The guidance points travelers with no workable transit route toward other modes, and one app holds all of them, so trading a train itinerary for a bike, scooter, or walking one costs a few taps and no second download. Sequence matters here. A commuter who settles the question of mode at home leaves with one strategy covering the whole trip, while a commuter who settles it underground improvises the second half of a journey that has gone wrong.
Line-specific alerts close the gap between a stoppage starting and a rider finding out. Someone who registers a home-to-work line learns of trouble before reaching the station and spends the saved minutes picking another way across town. Lead time does the work, since every option stays open longer for whoever hears first.
Timing beats substitution on a strike day. A traveler who gets word at home picks from every route, bike, and sidewalk still available, while one who gets it at the turnstile takes whatever the crowd ahead has left.
