There are 2 results of your search for roadie1.
roadie1
a drink (usually a can/stubbie of beer) that you drink in the car on the way home: Have a roadie for the trip home.
Contributor's comments: Term is also used in SA.
Contributor's comments: Used in Victoria and QLD also.
Contributor's comments: Common in WA.
Contributor's comments: [Melbourne informant] Also known as a Traveller.
Contributor's comments: [Melbourne informant] I have heard 'traveller' used in the same way as described for 'roadie', but I have never heard 'roadie' used this way.
Contributor's comments: "Roadie" is used in the ACT.
roadie2
I know of this word as meaning "one for the road", (one last drink before leaving) not as a drink while driving.