GEH meaning in General ?

Great Eastern Highway is a 590-kilometre-long (370 mi) road that links the Western Australian capital of Perth with the city of Kalgoorlie. A key route for road vehicles accessing the eastern Wheatbelt and the Goldfields, it is the western portion of the main road link between Perth and the eastern states of Australia. The highway forms the majority of National Highway 94, although the alignment through the Perth suburbs of Guildford and Midland, and the eastern section between Coolgardie and Kalgoorlie are not included. Various segments form parts of other road routes, including National Route 1, Alternative National Route 94, and State Route 51.

There are numerous intersections in Perth with other highways and main roads, including Canning, Albany, Tonkin and Roe Highways, and Graham Farmer Freeway. There are also two rural highways that spur off Great Eastern Highway. Great Southern Highway begins near Perth's eastern metropolitan boundary, linking towns such as York, Brookton, Narrogin, and Katanning. Near the eastern end of the highway, Coolgardie is the starting point of Coolgardie–Esperance Highway, connecting to the interstate route Eyre Highway at Norseman, as well as the coastal town of Esperance.

The highway was created in the 1930s from an existing system of roads linking Perth with the Goldfields. Though the name Great Eastern Highway was coined to describe the route from Perth to Guildford on the northern side of the Swan River (modern-day Guildford Road), it was actually used for the road through Belmont, south of the river. This section was constructed in 1867 using convict labour, with the road base made from sections of tree trunks. Over the years the road has been upgraded, with the whole highway sealed by 1953, segments reconstructed and widened, dual carriageways created in Perth and Kalgoorlie, and grade separated interchanges built at major intersections. Great Eastern Highway Bypass in Perth's eastern suburbs opened in 1988, allowing through traffic to avoid the Guildford and Midland townsites, and in 2002 a new bypass diverted the highway around Northam. A future route to replace Great Eastern Highway's current ascent of the Darling Scarp has been identified. The planned route is a controlled-access highway along Toodyay Road to Gidgegannup, and then across to Wundowie via a new alignment. Though planning began in the 1970s, as of 2012, construction of this route has not been scheduled, and it is not considered a priority.