Funny... The Universidad de los Andes did a study last September comparing days with ciclovia (Sunday carfree) and regular days in Bogotá, and found, among others, that PM10 was 13 times higher during a weekday, and noise was 7 times higher. This was done with actual measurements during various days, so it would be more relevant than the opinions shown below... the full study is available (in Spanish) from Olga Lucía Sarmiento <<a href="mailto:osarmien@uniandes.edu.co">osarmien@uniandes.edu.co</a>> <div> </div><div>Best regards,</div> <div> Carlos. <div class="gmail_quote">2009/2/24 Todd Edelman, Green Idea Factory <edelman@greenidea.eu> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> <div bgcolor="#ffffff" text="#000000"> <h1>Activists: Car-Free Days Are ‘A Waste’</h1> <a href="http://www.thejakartaglobe.com/news/city/article/10931.html" target="_blank">http://www.thejakartaglobe.com/news/city/article/10931.html</a> <div> Environmental activists on Monday urged the Jakarta Administration to temporarily halt its car-free days on selected city roads, saying a re-evaluation was needed because the event had failed to reduce air pollution and loose regulations have resulted in many violations, including those by senior officials. “Legally, the car-free days cannot be stopped, but the city administration should halt them temporarily and conduct a review of what went wrong. Honestly, it’s been such a waste,” Selamet Daroyni, the executive director of the Jakarta branch of Indonesian Forum for the Environment, or Walhi, told a press conference. Selamet said car-free days, generally on Sundays, had failed to achieve the short-term objective of minimizing air pollution and also had failed to encourage Jakarta residents to be more environmentally friendly and less dependent on cars. “If we perceive this issue from the three success indicators, I’d say these events did not help much,” Selamet said. He said the indicators were public participation, air pollution reduction and public obedience, including by government officials and law enforcers. Ahmad Safrudin, of the Committee for Phasing Out Leaded Gasoline, said car-free days merely relocated traffic flow from one place to another without reducing air pollutants. He said that a report by the Jakarta Environmental Management Board, or BPLHD, that air pollution has decreased significantly was unreliable. “Jakarta has five air quality monitoring systems, but only one of them is working, so I doubt the report,” he said. Ahmad said the inefficiency of car-free days had been proven by many violations, with some of the violators being government officials and policemen. Responding to criticism, Rina Suryani, the BPLHD head of natural resources monitoring, said they had scientific measurements to prove that car-free days had in fact contributed significantly to air pollution reduction. “In some parts of Jakarta, the air quality has gotten better because of this program,” she said. Rina said the board could not enforce sanctions against violators because the 2005 bylaw enabling car-free days had not stipulated any. Jakarta’s car-free days began in September 2007 and are held on the last Sunday of each month. This year BPLHD has scheduled 22 road closure events. </div> <pre cols="72">-- -------------------------------------------- Todd Edelman Green Idea Factory Urbanstr. 45 D-10967 Berlin Germany Skype: toddedelman Mobile: ++49 0162 814 4081 Home/Office: ++49 030 7554 0001 <a href="mailto:edelman@greenidea.eu" target="_blank">edelman@greenidea.eu</a> <a href="http://www.greenidea.eu" target="_blank">www.greenidea.eu</a> <a href="http://www.flickr.com/photos/edelman" target="_blank">www.flickr.com/photos/edelman</a> CAR is over. If you want it. "Fort mit der Autostadt und was Neues hingebaut!" - B. Brecht (with slight modification)</pre> </div> -------------------------------------------------------- IMPORTANT NOTE to everyone who gets sustran-discuss messages via YAHOOGROUPS. Please go to <a href="http://list.jca.apc.org/manage/listinfo/sustran-discuss" target="_blank">http://list.jca.apc.org/manage/listinfo/sustran-discuss</a> to join the real sustran-discuss and get full membership rights. The yahoogroups version is only a mirror and 'members' there cannot post to the real sustran-discuss (even if the yahoogroups site makes it seem like you can). Apologies for the confusing arrangement. ================================================================ SUSTRAN-DISCUSS is a forum devoted to discussion of people-centred, equitable and sustainable transport with a focus on developing countries (the 'Global South'). </blockquote></div> </div>