You can make use of the bus lane on the left and of the traffic lights.
If someone offers you a very short lift, be careful: you may end up getting stuck on a classic European-style highway entrance with very few cars if you're too close from the city. Ashburton is the closest "big" common destination and a good place to get dropped at. DO NOT accept a ride to Rolleston (Rolly) that is the bad spot mentioned just before...
=== West ===