The main motorways in Spain are generally well signed. However, if you are unfamiliar with Spanish geography, you’d best travel with a good road map. This is because signs will indicate the next large town or city but may not direct you to major cities until you are relatively close. It is a good idea, therefore, to have a list of all the main cities on your route in order to follow the thread and avoid confusion.
Generally exits will be indicated at standard distances giving you plenty of time to prepare to leave the motorway. However, it is not uncommon to find signs for industrial parks and attractions that are placed just at the exit – almost just after, but in clear view – making it difficult for those unfamiliar with the area to know whether to exit immediately or at the following exit - so stay alert as you near your destination.
The signs on smaller roads may be more difficult to follow at times and in towns and cities are you are best off with a GPS navigation system as signing for major motorways, hotels or monuments can drive you mad at times.
To learn more about the symbols used on Spanish signs, visit the official site for the traffic department: www.dgt.es.