In Lagos, there aren't many one-way signs. Most streets is on a if-you-know-you-know basis. In addition, they change the rules of a street as they please, today its one-way, tomorrow its not.
In further addition, most government officials and police do not obey *any* driving laws.
If the government wishes to tackle driving violations, the first thing that is their responsibility is to install proper signage, fix roads, and paint proper road markings. Ensure people actually take official computerized and physical driving tests.
You don't skip all your own duties and jump to impounding and selling peoples vehicles, thats illogical. But illogical is synonymous with this government so there we have it.