{"id":4912,"date":"2018-09-25T16:25:19","date_gmt":"2018-09-25T15:25:19","guid":{"rendered":"http:\/\/qpol.qub.ac.uk\/?p=4912"},"modified":"2018-09-25T16:25:19","modified_gmt":"2018-09-25T15:25:19","slug":"london-proposing-20mph-speed-limits","status":"publish","type":"post","link":"https:\/\/blogs.qub.ac.uk\/qpol\/london-proposing-20mph-speed-limits\/","title":{"rendered":"London is proposing 20mph speed limits \u2013 here\u2019s the evidence on their effect on city life"},"content":{"rendered":"\n

A new speed limit of 20mph has been proposed<\/a> for roads in central London. The plans, which would reduce the limit to 20mph within the Congestion Charging Zone, are part of the \u201cVision Zero\u201d strategy<\/a>, which aims to \u201celiminate deaths and serious injuries from London\u2019s transport network by 2041\u201d.<\/p>\n\n\n\n

The main reason for reducing traffic speed is to lessen the likelihood of a collision \u2013 and to reduce the severity of road traffic casualties. Research indicates<\/a> that if a pedestrian is struck by a vehicle at 24mph, they have a 10% risk of dying. This goes up to 25% at 32mph, and 50% at 41mph. A reduction in speed of as little as 1mph is associated with a reduction in casualties of up to 6%.<\/p>\n\n\n\n

Yet plans for the 20mph limit in London have been controversial<\/a>. Some question the impact it will have on increased traffic congestion and air pollution. Retailers are concerned it will discourage customers from visiting the city centre due to increased congestion. Others question the need for a 20mph limit in areas where congestion means it is rarely possible to go any faster than that. So what\u2019s the evidence on 20mph limits so far?<\/p>\n\n\n\n

To continue reading the article please click here. <\/a><\/p>\n\n\n\n

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The featured image<\/a><\/em> has been used courtesy of a <\/em>Creative Commons license. <\/em><\/a><\/p>\n\n\n\n

Article first appeared in The Conversation.<\/a><\/p>\n\n\n\n

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<\/div>\n","protected":false},"excerpt":{"rendered":"

Following the recent decision to lower speed limits in central London to 20mph, Dr Ruth Hunter looks at similar schemes across the UK to see what London can learn from other cities. <\/p>\n","protected":false},"author":2511,"featured_media":4916,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[250],"tags":[754,144,145],"class_list":["post-4912","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-community-and-society","tag-20-miles-per-hour","tag-london","tag-london-city"],"mb":[],"acf":{"authors":{"simple_value_formatted":"","value_formatted":null,"value":null,"field":{"ID":9774,"key":"field_66d0cbf58f930","label":"Authors","name":"authors","aria-label":"","prefix":"acf","type":"relationship","value":null,"menu_order":1,"instructions":"","required":0,"id":"","class":"","conditional_logic":0,"parent":9772,"wrapper":{"width":"","class":"","id":""},"post_type":["authors"],"post_status":["publish"],"taxonomy":"","filters":["search"],"return_format":"id","min":0,"max":10,"allow_in_bindings":0,"elements":["featured_image"],"bidirectional":0,"bidirectional_target":[],"_name":"authors","_valid":1}},"description":{"simple_value_formatted":"","value_formatted":"","value":"","field":{"ID":9776,"key":"field_66d2183027749","label":"Description","name":"description","aria-label":"","prefix":"acf","type":"wysiwyg","value":null,"menu_order":3,"instructions":"","required":0,"id":"","class":"","conditional_logic":0,"parent":9772,"wrapper":{"width":"","class":"","id":""},"default_value":"","allow_in_bindings":0,"tabs":"all","toolbar":"basic","media_upload":0,"delay":1,"_name":"description","_valid":1}}},"jetpack_featured_media_url":"https:\/\/blogs.qub.ac.uk\/qpol\/wp-content\/uploads\/sites\/76\/2018\/09\/20-mph.jpg","jetpack_sharing_enabled":true,"amp_enabled":true,"mfb_rest_fields":["title","jetpack_featured_media_url","jetpack_sharing_enabled","amp_enabled"],"_links":{"self":[{"href":"https:\/\/blogs.qub.ac.uk\/qpol\/wp-json\/wp\/v2\/posts\/4912","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.qub.ac.uk\/qpol\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.qub.ac.uk\/qpol\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.qub.ac.uk\/qpol\/wp-json\/wp\/v2\/users\/2511"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.qub.ac.uk\/qpol\/wp-json\/wp\/v2\/comments?post=4912"}],"version-history":[{"count":0,"href":"https:\/\/blogs.qub.ac.uk\/qpol\/wp-json\/wp\/v2\/posts\/4912\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.qub.ac.uk\/qpol\/wp-json\/wp\/v2\/media\/4916"}],"wp:attachment":[{"href":"https:\/\/blogs.qub.ac.uk\/qpol\/wp-json\/wp\/v2\/media?parent=4912"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.qub.ac.uk\/qpol\/wp-json\/wp\/v2\/categories?post=4912"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.qub.ac.uk\/qpol\/wp-json\/wp\/v2\/tags?post=4912"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}