mattwnz:

 

They will also likely price into the RUC, that a lot of people won't pay them, so everyone ends up paying for thiose users as a result. People can't avoid paying with the petrol levy.

 

That's true of any regulated tax/levy/duty though, non-compliance always has to be accounted for. I think people are giving way too much air time to the likely cost, and all the thousands of people who are going to somehow be suddenly smart enough to bypass the system. Non-compliance will be absolute chicken feed compared to the billions in RUC revenue. As for the cost, because we will shift from the current model where we collect less and less every year from FED, to a system where (the compliant) many will share the load, it may well happen that RUC for light petrols comes in under the current FED rate, while still giving the roading fund the boost it needs.