Motorways are the arterial roads of the road network and as such represent your heart and circulatory system.
A motorway exit or off ramp, indicates a warning that something you are doing has the potential to end your life journey. The rest of the dream will comment on what it is and what counter measures you need to take. Death itself is inevitable, so it is therefore inevitable that you will have dreams like this. There is no need to panic about such dreams. Just take their advice and wait for your dreams to change.
