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traffic studies

  • 24-03-2011 1:11pm
    #1
    poochiem
    Registered Users, Registered Users 2 Posts: 690 ✭✭✭


    This is a blog from London examining the traffic data in a particluar central area and it's change over a 4 year period. do we have similar data for Dublin or elsewhere in Ireland?

    People are really surprised when I show them the number of cyclists along the canal in the morning and to my eyes there seems to be a monthly increase


Comments

  • #2
    Doctor Bob
    Registered Users, Registered Users 2 Posts: 1,141 ✭✭✭Doctor Bob


    The DTO used to do Road User Monitoring reports for the Greater Dublin Area, but I'm not sure if that function transferred to the NTA when the DTO was dissolved.

    On cycling specifically, as opposed to traffic in general, Dublin City Council does an annual cordon count of cyclists crossing both canals in mid-November, from 7-10 am on two consecutive days, and counts cyclists crossing the Liffey bridges on (I think) a different day/different days.

    Other initiatives such as the College Green Bus Gate are monitored too. I haven't seen any readily available data, though I've heard anecdotally that cyclist numbers have risen considerably since the Gate was implemented.

    Given the limited range of these monitoring activities, I usually take the cycling figures as the absolute lower limit. Anyone who cycles along, say, the Grand Canal, but who never crosses a bridge, simply isn't counted. Likewise anyone who cycles within the canal ring, but doesn't cross the Liffey. I suspect that you could double or even treble the numbers and be closer to the truth.

    Monitoring is a bit of a bugbear of mine. Some significant changes have taken place in the city in recent years, but the only way to assess objectively whether or not they're working is to do before-and-after studies. A case in point would be the 5-axle HGV ban- it is generally assumed that the ban has made the quays safer for cycling, but on the rare occasions I use the quays I can't say I've noticed a difference. If anything, things may have got worse, as the space freed up by the HGVs has simply filled up with taxis (30 km/h speed limit? What 30 km/h speed limit? :rolleyes:). I've said it here before, but DCC really should have re-designed the quays after the HGV ban, and/or after the 30 km/h redesignation.

    (Standard caveat- not all taxi drivers... etc.)


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