To avoid induced demand, you need to make other modes of transport more attractive than driving. So if there are two routes from A to B and one is longer, then

To avoid induced demand, you need to make other modes of transport more attractive than driving. So if there are two routes from A to B and one is longer, then the shorter route should be reserved for the modes of transports that have a higher capacity. (That usually means banning cars) Another really good option is to have dedicated bus lanes so buses don't get stuck in traffic. As a car driver you massively benefit if other people take the bus or bikes instead of their car. Plus you and especially the ones who are to old, young, poor, disabled to drive a car have good options of getting around.