Skip to main content

Help us improve the National Data Library - complete this short survey

Close survey banner
501 to 501 of 501 results
  • Major Roads Lden

    Publisher
    OpenDataNI
    Updated
    6 August 2026
    Source Lden Lnight Lday Levening LAeq,16hr Major RoadsThose which have more than three million vehicle passages a year (for mapping rounds other than Round 1)The day-evening-night level indicator...