50232000 Maintenance services of public-lighting installations and traffic lights Repair, maintenance and associated services related to roads and other equipment
50232000 Gwasanaethau cynnal a chadw cyfarpar goleuo cyhoeddus a goleuadau traffig Gwasanaethau atgyweirio, cynnal a chadw a gwasanaethau cysylltiedig mewn perthynas â ffyrdd a chyfarpar arall