hiways and byeways
Refers to sets of two different and successive roads where you initially meet a specific fellow motorist on da first road, and then bid him farewell on da second road because da two of you are traveling in different directions.
If you're in da habit of running afoul of one or more smokeys on your road-trips, you'll want to choose routes dat includes enough pairs of hiways and byeways so dat you can give said Men In Blue da slip whenever necessary.