Yes, this is more like a time bound price control in terms of -you can change the price as you please, but only once a day. The result will be that people have to pay a premium to not have volatility. In no way will this help. Imagine prices were to spike a lot on a day on the market. People will fill everything they have before the price goes up next day at the station. They have to calculate with that so it will end in even higher prices. It's also a great way to achieve physical shortages.