% A German-study: ice-familar German public are EV-unfamilar %
http://green.autoblog.com/2014/02/25/psychology-can-wipe-out-20-25-of-your-evs-range/ Psychology can wipe out 20-25% of your EV's range By Danny King Feb 25th 2014 [images http://o.aolcdn.com/hss/storage/adam/a9f00e064f3efbabeadf602dc81a8ba9/mini.jpg Mini E http://green.autoblog.com/photos/quick-drive-mini-e/#photo-119594/ Quick Drive: MINI E Photos ] There are two primary takeaways from a recent study of electric-vehicle driving habits in Germany. One: an electric vehicle with 25 percent of its battery charge left creates the same reaction in drivers as the fuel needle on "E" in a gas-powered car. Two: familiarity breeds comfort. The study, conducted by Germany's Technische Universität Chemnitz and funded by the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety, put some real numbers on the concept of "range anxiety." According to Green Car Congress, that anxiety truly kicks in when there's less than a quarter of the driving range left on an EV's battery and the study found that a typical car's range is "shortened" by a 20 to 25 percent "psychological safety buffer." If we take the popular Nissan Leaf as an example, the official 84-mile single-charge range is really closer to 63 miles in the head of the driver. The longer the driver spent in the EV, the shorter his mental buffer became. The study was culled from data involving just 79 drivers who tooled around Berlin in Mini E EVs for about six months, collectively putting a quarter-million miles on the electric vehicles. The good news is that the longer the driver spent using the EV, the shorter his mental buffer became, which meant he could comfortably get more miles from the car. So, to all you EV advocates out there, know that once drivers spend some time with an EV, they get more and more used to what the car can do. It's a lesson we've learned before. Just remember that to new EV drivers, the single-charge range is a lot smaller than the one old-timers see. [© 2014 AOL] http://www.thegreencarwebsite.co.uk/blog/index.php/2014/02/26/electric-car-range-its-all-in-our-heads/ Electric car range: it’s all in our heads by Paul Lucas February 26, 2014 [image http://www.thegreencarwebsite.co.uk/cms-images/BMW-MINI-E_2_thumb.jpg BMW MINI E ] It seems one of the largest barriers to improving the range of the electric cars we drive (or will drive) is all in our heads. That's the verdict of a doctoral candidate at Technische Universitat Chemnitz, Germany, who believes that 20-25 per cent of the potential range of an electric car is typically lost as a psychological safety barrier. Based on more than 249,000 miles of user experience gathered during a MINI E (pictured) project, which featured 79 users driving the vehicle for six months, the psychologists carried out interviews at several points as well as utilising data loggers, diary methods and questionnaires. It was discovered that a key element in adaptive control of range resources is the idea of comfortable range, as outlined by Thomas Franke. "Via the analogy to psychological stress, different variables that influence comfortable range are identified," he said. "The comfortable range (i.e. an individual's preferred range safety buffer) appears to be a variable that shows a high inter-individual variance, which partly seems to be predicated upon differing stress resistance. "In sum, the suboptimal range utilization found in previous studies is explained by the proposition that there are three psychological range levels besides the technical range that characterize the transition from the objective physical to the subjective psychological range situation: (1) The competent (i.e. maximum achievable for the user), (2) the performant (i.e. available on an everyday basis) and (3) the comfortable (i.e. actual usable) range. It shows that 20-25 per cent of the range resources that are available on an everyday basis are lost as a psychological safety buffer." Franke suggests that an objective is to fill in the gaps between the range levels and therefore produce a more suitable range without losing driving pleasure. For all EVLN posts use: http://electric-vehicle-discussion-list.413529.n4.nabble.com/template/NamlServlet.jtp?macro=search_page&node=413529&query=evln&sort=date Here are today's archive-only EV posts: EVLN: £30k BladeGlider Sports EV r:200mi is less of a drag EVLN: Thriev snaps-up Green Tomato's BYD's e-taxis r:186mi EVLN: Commuters' ultimate last-mile URB-E electric scooter (video) EVLN: 'Employee drivers key to successful EV fleet introduction' EVLN: £42k Halo sportsEV will launch in the UK by 2016 r:200km EVLN: Tusker encourages their staff into a wider take-up of EVs + EVLN: Most Unusual Place You've Charged, CONTEST {brucedp.150m.com} -- View this message in context: http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVLN-A-newbie-s-mindset-can-wipe-out-25-of-their-EV-range-tp4668150.html Sent from the Electric Vehicle Discussion List mailing list archive at Nabble.com. _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
