You need a parking disc in those areas. You can buy in many shops in Batz-sur-Mer, or at the Tourist Office.
You have to put the time of your arrival at the car park.
From march 31 toseptember 30, from monday to saturday* from 9 am to 12:30 am and from 2:30 pm to 5:30 pm, the maximal stay is one hour for the next places :
Rue des Etaux
Rue Charles de Gaulle
Place du Garnal
Rue Jean XXIII
From July 1st to August 31st, from monday to saturday*, the rue du Croisic (the Post parking), from 9:00 am to 12:30 am and from 2:30 pm to 5:30 pm, the maximal stay is 30 minutes.
From July 1st to August 31st, for : Place Honoré de Balzac, on mondays and fridays, the parking is limited at one hour from 9:00 am to 1:00 pm.
*From monday to saturday, including holidays (instead of March 31st to September, 30th).
Blue areas are controlled from monday to saturday, during the hours mentionned.