Complex sentence: Much of the Highway from Wentworth northwards has a speed limit posted at 110 km/h. The 265 km from Wentworth to Broken Hill has just one roadhouse, Coombah, which sells basic foodstuffs and fuel.
Split into simpler sentences: Much of the Highway from Wentworth northwards has a speed limit posted at 110km/h. The 265km from Wentworth to Broken Hill has just one roadhouse, Coombah, which sells basic foodstuffs and fuel.