In comparison to metros, light rail is more lightly constructed, is designed for lower traffic volumes and usually travels at lower speeds.
I gcomparáid leis an meitreo, is éadroime déanamh an iarnróid éadroim, is do mhéid tráchta níos lú a ceapadh é agus is lú an luas ag a n-imíonn sé de ghnáth.