English: running lane
Welsh: lôn redeg
Subject: Cyfraith
English definition: Where adjacent traffic lanes are controlled separately by their own traffic signals - sometimes called filters or slip lights - the lane that has the green light - the green phase - is called the running lane.
Welsh definition: Mewn ardaloedd lle mae Cynllun Rheoli Traffig Gweithredol mewn grym, gellir defnyddio’r llain galed fel lôn redeg.