22 – Returning in a limited waiting bay within prescribed times - Parking in the same parking place or zone within one hour (or other specified time) of leaving
21 – Dychwelyd i fan parcio aros cyfyngedig o fewn amseroedd penodol – Wedi ail barcio yn yr un man neu barth parcio o fewn awr o adael (neu amser penodol arall)