00389pab a2200133 454500008004000000100002100040245010400061260000900165300001300174362000800187650001200195700001700207773003100224180718b2013   xxu||||| |||| 00| 0 eng d  aDe Borger, Bruno  aTraffic externalities in cities: The economics of speed bumps, low emission zones and city bypasses  c2013  ap.53-70.  aJul  aTraffic  aProost, Stef  aJournal of Urban Economics