Canberra's districts are generally connected by parkways—limited access dual carriageway roads with speed limits generally set at a maximum of . An example is the Tuggeranong Parkway which links Canberra's CBD and Tuggeranong, and bypasses Weston Creek. In most districts, discrete residential suburbs are bounded by main arterial roads with only a few residential linking in, to deter non-local traffic from cutting through areas of housing.