It’s quite straightforward: depending on where you come in from, you’ll join the ring road at one of the 30 gateways (“portes”) that punctuate the 35 km of expressway. Based on the area you are heading towards, you have the choice between the inner ring road (“périphérique intérieur”) which runs in a clockwise direction and the outer (“périphérique extérieur”), which runs anti-clockwise).

Traffic flow and journey time between gateways are displayed on illuminated overhead panels. Exit signs for each gateway into the city are given plenty of time in advance so as not to miss them, so make sure you position yourself correctly in the right-hand lane. The speed limit is 80 km/h (50mph), sometimes less whenever pollution levels peak… Watch out for the speed checks!

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