What do letters R and E before parking slots in Spain mean?

A parking lot or car park, also known as a car lot, is a cleared area intended for parking vehicles The term usually refers to an area dedicated only for

No member should be allowed to park more than one vehicle in a single parking space Any requests for a second slot can be made on a yearly

parking slot or spot parking slot for their private vehicles and their origin and destination meaning that car drivers are more willing to use bus or BS if the travel

parking slot dimension in meters A parking lot or car park, also known as a car lot, is a cleared area intended for parking vehicles The term usually refers to an area dedicated only for