They are the ones that are going to be hit the most.
Almost all of the middle class people are able to afford the 450 by shuffling their budgets. It sucks, I dont agree with it, but push comes to shove, we can cut a few things out to filter some finances towards this.
The lower / poor class is already living hand to mouth, with practically no spare monies. And the toll gates will increase their monthly "living" expense costs.
* The truck that delivers the petrol to the station will be tolled, and someone has to recover that money. Therefore higher taxi fares. The country didn't want a fuel levy to pay for tolls, no problem, we will now pay extra for fuel anyway to cover someone else's transport costs of delivering the fuel.
* Food prices will go up, and drastically. Remember that the goods in the shop do not travel through the toll gate only once. Raw materials are delivered to the factory, finished product is delivered to a storage facility, finished goods is bought by a DC such as SPAR or Checkers and in turn delivered to their own warehouse, and then in turn that product is delivered to the shop. YOur simple loaf of bread would have paid the toll gates 3-4 times on its way to your shop.
And that is just the start of things, I can name and number a never ending list of how this will affect not just "middle" class, but how it will actually starve off the "lower" class.
Based on the above, don't be surprised if the goods in your neighbourhood shops rise by as much as 20%. Dont be surprised if the crime rate increases because a father who previously just made the ends meet, would rather die than see his kids starve.