Complex sentence: In the United Kingdom, Off-Network Tactical Diversion Routes are pre-planned road traffic routes that bypass the main trunk road network, and are marked with road signs in the form of apparently meaningless geometric shapes.
Split into simpler sentences: In the United Kingdom, Off-Network Tactical Diversion Routes are pre-planned road traffic routes that bypass the main trunk road network. They are marked with road signs in the form of apparently meaningless geometric shapes.