The number of traffic jams increased by 8% in the year 2007. Between 10:00 am and 15:30 the so-called backup wait – defined as length of the backup multiplied by the time it lasts – has increased by 23%.
www.parool.nl/nieuws/2007/DEC/28/bin1.html
www.parool.nl/nieuws/2007/DEC/28/bin1.html
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