Conduit system for a motor vehicle

The invention relates to a line system (1) for a motor vehicle, preferably a commercial vehicle. The line system comprises a gas compressor (2) for conveying a gas, a gas dryer (3) for drying the gas, and a cooling device (4), in particular a cooling coil, for cooling the gas, which is arranged in terms of flow between the gas compressor (2) and the gas dryer (3). The line system (1) is distinguished in particular by a bypass device (B) with a bypass line (L) for the gas, by way of which the gas can be conducted to the gas dryer (3) while bypassing the cooling device (4).