The world’s loudest bicycle horn - Guinness World Records 2015

Take a peek into our Guinness World Records 2015 book: http://www.guinnessworldrecords.com/2... Subscribe for more: http://bit.ly/subscribetoGWR Brace yourself as we come up close to the world’s loudest bicycle horn. Built using a modified freight train horn and powered by a scuba diving tank, as Yannick Read demonstrates, the ‘Hornster’, is able to produce a sound pressure level of 136.2 db(A)! Welcome to the official Guinness World Records YouTube channel! If you're looking for videos featuring the world's tallest, shortest, fastest, longest, oldest and most incredible things on the planet, you're in the right place. LIKE us on Facebook:   / guinnessworldrecords   FOLLOW us on Twitter:   / gwrnews   Find out more: http://www.guinnessworldrecords.com/ Add us to your G+ circles: http://bit.ly/GWRgplus #GWR #GuinnessWorldRecords #worldrecord