To cope with the increasing demand for utility services and maintenance work,utility companies often have to excavate the carriageways and footpaths to lay more pipes,cables and ducts,and to carry out repair work.

• 为应付公用设施及维修工程方面日益增加的需求，公用事业公司须经常挖掘行车道和行人路，以便敷设更多喉管、电缆及管道，以及进行修理工程。