Consistency is key to the success of crucial roads, which are next on the Government's construction hit list. 

It's funnelling nearly 1.2 billion into 17 highway projects countrywide,  as part of the Roads of National Significance programme. 

National Road Carriers Policy manager James Smith told Ryan Bridge newly built roads of significance such as the Kapiti Expressway have seen significant benefits. 

He says not only do they lead to slightly faster travel times, but the route is now more reliable and dependable. 

Smith says in his industry, drivers need to know what time they will arrive.

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