Drivers will have to be patient for at least three more months when passing through the notorious Maliakos Gulf section of the Athens-Thessaloniki national highway due to disruption being caused by roadwork. Traffic was backed up some 10 kilometers on this stretch of the national road in central Greece on Sunday afternoon as thousands of Athenians returned to the capital. Some 900,000 cars left Athens over the Easter break and many vehicles are expected to return this week. Traffic police said that only half of the cars had returned so far. The roadwork is taking place at several points along a 60-kilometer stretch and the Public Works and Environment Ministry said yesterday that some 20 kilometers will be ready around July. Another 17 kilometers should be ready by the end of the year, the ministry said. The highway along the Maliakos Gulf is considered one of the most dangerous stretches of road in Greece and the work currently being carried out is designed to make the network safer.