The Paris ring road (boulevard périphérique) has almost no hard shoulder along its entire route. Only a short stretch near Porte de Gentilly is an exception. It's one of the busiest roads in France, carrying over 250,000 vehicles a day on its busiest sections. Breaking down on it isn't like breaking down on a normal road: you're sitting directly in a live traffic lane, with no obvious way out.
Why breaking down here is particularly dangerous
Based on the figures available (historical data, but still telling about conditions on the ground), the ring road has recorded several hundred accidents a year, with one striking pattern: motorcyclists and moped riders account for nearly 60% of casualties despite making up only around 15% of traffic. In other words, if you're stopped, on foot, next to your car, you're in the highest-risk zone on the entire Paris road network.
What to do, in order
Hazard lights on, immediately.
If the car can still move a little, try to reach one of the rare emergency lay-bys found in the covered or tunnel sections. These are the only real refuges on the ring road.
Get out of the vehicle from the passenger side, never the traffic side.
Put your hi-vis vest on before you get out. This is compulsory, not optional.
Move away from the vehicle, behind a barrier if there is one.
Call 112, or use an emergency roadside phone.
Don't put out a warning triangle on the ring road. At these speeds and this traffic density, walking out to place one is more dangerous than not doing it at all.
What about the motorways leading into Paris (A1, A3, A4, A6, A10, A13)?
Unlike the ring road, these motorways have a proper hard shoulder along most of their length, which changes things: where possible, steer the vehicle onto the hard shoulder rather than staying in a live lane. Once stopped there, the same principle applies as on the ring road: hazard lights, exit on the passenger side, hi-vis vest, shelter behind the crash barrier, then call. The hard shoulder is still an exposed spot, not somewhere to linger.
The low-emission zone (ZFE) and Crit'Air: what to know
One question comes up often once the breakdown is sorted: if the vehicle has to drive to a garage and doesn't have the required Crit'Air sticker, does a breakdown give the right to an exemption from the Paris low-emission zone? The answer isn't as simple as you'd want. Exemptions from ZFE rules do exist for certain specific cases, but they aren't automatic and don't cover every situation. As far as we're aware, Paris doesn't appear on any confirmed list of zones where a breakdown automatically grants a ZFE exemption. In practice: don't assume a breakdown covers you. Before driving a non-compliant vehicle into the ZFE, even for a short trip to a garage, check the current rules with the préfecture de police or the official Crit'Air website.
Broken down on the ring road right now? Get yourself safe first, following the steps above. Once you're somewhere safe, call us with your exact position: the nearest exit, direction of travel, a landmark.