human geo

URBAN SPRAWL

  • Definition: Urban sprawl refers to the spread of housing from cities into surrounding rural areas, problematic in Ireland, particularly in Dublin and Cork.

  • Historical Expansion:

    • Early suburbs: Greystones, Malahide, Maynooth.

    • Later developments: Tallaght, Lucan-Clondalkin, Blanchardstown.

    • 1990s housing boom led to expansion into counties like Mullingar, Portlaoise, Navan, blending small towns into larger suburban areas.

CAUSES OF URBAN SPRAWL

  • Increased migration to urban areas due to economic growth and job opportunities.

  • Rising car ownership facilitates commuting and contributes to sprawl.

  • Population growth in urban areas exceeds housing and service capacity.

  • Notable increase in the Dublin area due to rural-urban migration and immigration.

    • Example: Ashbourne population growth from <400 in 1970 to 13,000 in 2020.

  • Road infrastructure improvements (motorways) have further encouraged sprawl and longer commutes.

  • Ireland's average commuting time: double the EU average

Traffic Congestion

Definition

  • Traffic congestion occurs when vehicle numbers on road networks exceed capacity, slowing or stopping traffic flow, leading to jams or gridlock and queues.

Causes

  • Greater Dublin Area population: 1.9 million people contributing to increased congestion, especially during rush hours (7-10 AM and 4-7 PM).

  • Dublin's road layout predates the car, leading to bottlenecks as commuter routes converge near the city center.

  • Commuters can take up to 90 minutes from Blanchardstown to city center during peak times.

  • Economic growth (Celtic Tiger from 1995) increased car ownership: 2.8 million cars in 2019, with 1.95 million privately owned.

  • Rise in heavy goods vehicles (HGVs) transporting imports and exports adds to congestion.

Effects

  • Social, economic, and environmental impacts:

    • Noise pollution at peak times affects resident quality of life.

    • Increased accident risk, particularly near schools.

    • Businesses face profit losses due to higher fuel costs from delays.

    • Health issues linked to traffic jams and air pollution, raising lung disease risk in affected populations.

Solutions

  • Implementing bans on HGVs in Dublin city center during peak times to reduce congestion.