This bicycle is the first in the world to be created simply by printing it out on a computer, using groundbreaking new technology.
The fully-working cycle, which is made of nylon, is the result of an extraordinary project and is as strong as steel and aluminium but weighs 65 per cent less.
Scientists in Bristol designed the bike on a computer and sent it to a printer, which placed layers of melted nylon powder on top of each other to build-up the machine.
In total, 127 hours and 38 minutes of usable footage was obtained. 54 'events' were captured on film – two collisions, six near-collisions (where rapid evasive action by the cyclist was needed) and 46 other incidents (where some collision avoidance was required).
The cameras also recorded the road position and behaviour of the cyclists – including head checks, reactions and manoeuvres. The aim was to identify risk factors for both cyclists and motorists.
In 88.9% of cases, the cyclist had been travelling in a safe/legal manner prior to the collision/near miss. Most happened at or near a junction (70.3%) and most were caused by sudden lane changes by the motorist, with sideswipe the most frequent cause (40.7%).
The motorist was judged at fault in the majority of events (87%), and 83.3% of drivers didn't realise the danger they had put the cyclist in – or at least didn't show any reaction. Riders who frequently looked over their shoulders to check for other traffic were the most successful at avoiding collisions.
While they both happened in cross traffic, the two collisions were very different. One was deemed to be the fault of a motorist, while in the other case the rider was cycling unsafely. In both cases the driver didn't see the cyclist.
Three of the six near-collisions involved trucks, at least five of the drivers didn't see the cyclist, and at least four of the incidents were deemed to be the motorist's fault. The vast majority of all types of incident (87%) happened where there was no traffic control, such as traffic lights or signage. 4x4 drivers were particularly likely not to see the cyclist (85.7%).
The authors of the study concluded that there was a need to improve driver awareness of cyclists and other road users, and to encourage motorists to use their indicators for longer. They also called for greater consistency in cycling facility design. In addition, they highlighted some things cyclists could do to improve their safety on the roads.
These include checking to the left more often (in countries where you ride/drive on the left, the tendency is to look right more often than left because vehicles in left-hand side roads should give way and are thus seen as a lesser threat), riding more defensively around cars and being particularly vigilant when it comes to drivers turning left at junctions, especially if they're in a large vehicle like a 4x4 or lorry.
* 'Naturalistic Cycling Study: Identifying risk factors for on-road commuter cyclists' by Marilyn Johnson, Judith Charlton, Jennifer Oxley and Stuart Newstead at Monash University Accident Research Centre in Melbourne (54th AAAM Annual Conference, Annals of Advances in Automotive Medicine, October 17-20, 2010)
Via Bike Radar
Officers believe building their new five-gear vehicle, which has a top speed of 20 miles per hour, will help combat anti-social behaviour.
The white car cost over £1,000, has full Hampshire Constabulary livery and a roll bar to protect the driver in the event of a crash.
However, police admit that even if they are pedalling furiously they are unlikely to be able to apprehend anyone other than "those with a zimmer frame".
The car will be entered into the British Pedal Car Grand Prix on July 11 in Ringwood, Hants.
PC Keith Waller, who will pilot the vehicle, spent 40 hours painstakingly building the replica car with children aged 13 to 16 at Ringwood Comprehensive School.
He insisted that getting involved with the project allowed police to show their "fun side" and made them look "cooler" and "more approachable".
But he also admitted it had made him a laughing stock as people drew comparisons with him and Mr Plod from cartoon series Noddy from Toytown.
PC Waller, a 51-year-old father of two, said: "The pedal car grand prix is a fantastic event which brings the community together.
"Getting youngsters involved gives them something to focus on at lunch and after school, so they are not out there committing anti-social behaviour.
"I have been able to reach out to the students and make the police more approachable. It makes me look cooler, we all have fun and the children can come and talk to me.
"There have been a few students who have viewed the project with suspicion but, generally, the response has been tremendous.
Source : Telegraph.co.uk
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