Boulevard Périphérique (French pronunciation: ​[bulvaʁ peʁifeʁik]), sometimes called Périph', is a controlled-access dual-carriageway ring road in Paris, France. With a few exceptions (see ), it is situated along Paris's administrative limit. The speed limit is 70 km/h (45 mph). Each ring generally has four traffic lanes, with no hard shoulder. At junctions, circulating traffic in the rightmost lane (separated from the other lanes at this point by a continuous white line to the left) must yield priority to entering vehicles.