▁being ▁short ened . ▁The ▁road ▁is ▁a ▁dual ▁carriage way ▁from ▁Br is b ane ▁to ▁Ky b ong ▁with ▁some ▁dual ▁carriage way ▁lengths ▁at ▁G ym pie , ▁many ▁of ▁these ▁up gr ades ▁being ▁completed ▁in ▁the ▁ 1 9 8 0 s ▁( G lass ▁House ▁Mountains , ▁T ana wh a , ▁Mary borough ) ▁and ▁ 1 9 9 0 s ▁( N amb our , ▁Y and ina , ▁and ▁Co oro y ). ▁ ▁The ▁highway ▁comm ences ▁just ▁south ▁of ▁the ▁bridge ▁over ▁the ▁P ine ▁River ▁at ▁the ▁Gate way ▁Motor way ▁inter change , ▁ ▁north ▁of ▁the ▁Br is b ane ▁central ▁business ▁district . ▁The ▁highway ▁has ▁changed ▁its ▁route ▁number ing ▁from ▁National ▁Highway ▁ 1 ▁to ▁the ▁M 1 ▁( mot or way ▁road ) ▁or ▁A 1 ▁( single ▁carriage way , ▁generally ▁with ▁over t aking ▁lan es ). ▁ ▁Major ▁cities ▁along ▁the ▁route ▁include ▁Mary borough , ▁Rock ham pton , ▁Mack ay , ▁Town sv ille , ▁and ▁C air ns . ▁The ▁highway ▁passes ▁the ▁G lass house ▁Mountains , ▁rain for ests ▁and ▁past ures ▁in ▁the ▁Sun sh ine ▁Coast , ▁the ▁G unal da ▁Range ▁( n orth ▁of ▁G ym pie ), ▁Mount ▁Lar com ▁( n orth ▁of ▁Glad stone ), ▁and ▁the ▁ar id ▁coun tr ys ide ▁north ▁of ▁Rock ham pton ; ▁after ▁that , ▁it ▁passes ▁through ▁land ▁pre domin antly ▁used