The signs are always visible on road signs even when the motorway is fully open. All you need to do is leave the motorway and look for the first sign with a symbol on it. following this exact symbol will then take you on a carefully chosen and pre-planned route to the next junction of the motorway. If it's still congested, you can carry on following the next symbol as the system 'daisychains' across the network. However, in a few cases, where there is more than one possible diversion, you might need to do a quick spot or web-based research to ensure you follow the right symbol. Read on for details.