Do freeways add to the urban heat island problem?



  1. 0 Votes

    Because the urban heat island phenomenon occurs as a result of heat absorption by building materials, and concrete and asphalt are very heat absorbant materials, it is possible that the heat from the many cars that travel on the freeways in urban areas could be contributing to the urban heat island.

  2. 0 Votes

    Freeways definitely add to the urban heat island problem because one of the major causes of this problem is the capture of heat in urban areas due to the materials present in those areas.  Materials commonly used in freeways and other surrounding areas in urban places, like concrete and asphalt, have significantly different thermal bulk properties and surface radiative properties than the rural areas.  This leads to a change in the energy balance of urban areas and often lead to higher temperatures in these areas.

  3. 0 Votes

    A very good example of where this happens is Los Angeles. 

    I have to take the bus down the Santa Monica Freeway almost everyday and this is what I look at all the time.  This problem not only contributes to the urban heat island problem, but also to poor air conditions to those on and living near the freeway. 

    [img_assist|nid=141669|title=Traffic Jam|desc=|link=none|align=left|width=640|height=377]

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