Just like a key to a door, the key helps you to unlock the information stored in the colours and symbols on a map. You must understand how the key relates to the map before you can unlock the ...

And this orange road is a secondary or B road. A full list of symbols is printed in the map key. To work out which direction to go, use the four-points of a compass. These are north, south ...

The closure was expected to last all day, but the road reopened at about 11.30am. However, lane one southbound will remain ...