Also like fluorescents they do not exhibit a bright arc as do other HID lamps; rather they emit a softer luminous glow, resulting in less glare.unlike High Intensity Discharge Lamps which can go out during a voltage dip low pressure sodium lamps restrike to full brightness instantly.
Also like fluorescents they do not exhibit a bright arc as do other HID lamps. They emit a softer luminous glow, resulting in less glare.unlike High Intensity Discharge Lamps. This less glare.unlike High Intensity Discharge Lamps can go out during a voltage dip. Low pressure sodium lamps restrike to full brightness instantly.