Hello, @Somehow Lucky thanks for creating this suggestion. I have a suggestion regarding this issue, mutual gas stations can be added for the traffic density in the regions where there are gas stations because people wait for a short time to return to the gas station across the street, which causes traffic.
This problem can be solved by having gas stations on both sides, of course this is my opinion. Apart from this, the capacity of gas stations can be enlarged. It may be a bit of an exaggeration, but it can be considered in the underpass, adds a different look.