Before revision: A high mast light in TorontoHigh-mast lighting tower in the stadium A six-lamp configuration on a mast High-mast lighting used on Ontario Highway 401 at night High-mast lighting used on Ontario Highway 401 during the day High-mast lights in conjunction with shorter lampposts at the Tainan System Interchange () in Sinshih District, Tainan, Taiwan ===== light a highway or recreational field.
After revision: A high mast light in TorontoHigh-mast lighting tower in the stadium A six-lamp configuration on a mast High-mast lighting used on Ontario Highway 401 at night High-mast lighting used on Ontario Highway 401 during the day High-mast lights in conjunction with shorter lampposts at the Tainan System Interchange () in Sinshih District, Tainan, Taiwan High-mast lighting is a tall pole with lighting attached to the top pointing towards the ground, usually but not always used to light a highway or recreational field.