This article does not describe an infrastructure problem, it describes a human-nature problem that is inherent to all densely-populated areas -- ie, cities and the like. If one travels outside of cities, one finds exactly this type of street -- with no markings, or barriers, or traffic lights. My own suburban neighborhood is largely this way, as are millions of others. And they work just fine, because the people either know each other, or at least, respect each other on a basic human level. Such respect is not found between humans in cities -- where one is unlikely to encounter the same stranger twice. The same cause is responsible for activities like theft -- in cities, any object of value not locked-down will be stolen, and even many of them that are locked-down will meet the same fate. At the same time, outside of cities, people can and do leave their property unsecured on a regular basis, and rarely is it stolen.
The problem is with the attitude of the people who live in these densely-populated areas, and the fact that civil behavior is not a trait they possess, and there's no authority to enforce such.