Read The Signs, Moron!!
It's already damn frustrating to be stuck in a long queue towards the toll booth. Then there would always be these people who do not know how to read.
Although the signs clearly stated "For Touch n Go Only", they would still go to these express lanes and get themselves stuck there for not having the Touch n Go cards to pass through. Those innocent drivers queueing behind them would then have to slowly reverse to make space for them to get to the cash lanes, causing the jam to become worse.
I think there should be bigger signs with clearer message for all these morons.