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National speed limits - road numbering scheme.

  • 07-07-2009 6:58pm
    #1
    michael_d
    Closed Accounts Posts: 38 ✭


    There are a total of five different types of speed limits throughout Ireland:
    ● Town and city speed limits (50 km/h)

    A speed limit of 50 kilometres per hour is in place in built-up areas (other than motorways or special speed limit zones).
    ● National road speed limits (100 km/h)

    A speed limit of 100 kilometres per hour is in place on all national roads (including dual carriageways) throughout Ireland.
    ● Regional and local speed limits (80 km/h)

    A speed limit of 80 kilometres per hour is in place on all regional and local roads (sometimes referred to as non-national roads).
    ● Motorway speed limits (120 km/h)

    A speed limit of 120 kilometres per hour is in place for all mechanical vehicles on all motorways. You should note that learner drivers, vehicles under 50 cc, bicycles, pedestrians, animals and invalid carriages are not allowed on motorways in Ireland.
    ● Special speed limits* (30 km/h or 60 km/h.)

    ► http://www.citizensinformation.ie/categories/travel-and-recreation/roads-and-safety/road_traffic_speed_limits_in_ireland

    So... why all roads with two-digit number eg.N51, N52 are limited to 80km/h ?
    There are all the same type (National road) N1, N2, N3.... or N51, N52


Comments

  • #2
    ardmacha
    Registered Users, Registered Users 2 Posts: 7,476 ✭✭✭ardmacha


    So... why all roads with two-digit number eg.N51, N52 are limited to 80km/h ?

    They are not.

    Some of these may have reduced limits, because National Secondary routes are often poor quality roads (esp the ones you mention), but these limits have been reduced specifically.


  • #3
    michael_d
    Closed Accounts Posts: 38 ✭michael_d


    A national secondary road (Irish: Bóthar Náisiúnta den Dara Grád) is a category of road in Ireland. These roads form an important part of the national route network, but are secondary to the main arterial routes which are classified as national primary roads. National secondary roads are designated with route numbers higher than those used for primary roads, but with the same "N" prefix. Routes N51 and higher are all national secondary roads.
    National secondary roads have a default speed limit of 100km/h as along with national primary routes, they fall into the speed limit category of national roads.


    ►►► http://en.wikipedia.org/wiki/National_secondary_road

    I got it :D

    btw. N52 from Carlanstown (Kells ) to Ardee area, is cool... twirly and unpredictable


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