Tybalt Melia got the idea for the sensor after his friend was killed while cycling
A 10-year-old boy from Conwy, who lost a friend in a cycling accident, has won an award for a road safety invention.
Tybalt Melia, from Capel Curig, invented the Bike Bleeper, a system clipped to the handle bars of a bike which transmits a signal to car radios warning them of cyclists ahead.
He has won the award with CBBC's My Genius Idea competition.
Tybalt has already met business executives from a satellite navigation system manufacturer to look into selling his product.
"The meeting was on the 20th floor of one of the highest buildings in London," said his mother, Alice Douglas.
"He was half sitting there, talking seriously about his product, and then running to the window and saying, 'Wow, this is really cool!'
"The guys were really sweet with him, but it was very funny to see him in this big boardroom."
A bike manufacturer has also shown interest in sponsoring the product.
Tybalt came up with the idea after a school friend was killed while out cycling.
Judges were particularly impressed on how hard Tybalt had worked to develop his product over the course of the series.
Tybalt's first winning invention was the belt bag (portable seatbelt)
During testing, they discovered that the device would work best on quieter, rural roads so as not to annoy car drivers in popular cycling towns like Cambridge.
Tybalt also agreed that he should invent a sensor which would automatically switch off the bleeper if it had been left on when the bike wasn't in use.
"I never thought I'd get this far, and I thought Emily did really well," said Tybalt of his fellow finalist, Emily, who had invented a device to warn sea mammals from swimming into environmentally dangerous waters.
"It's been a great experience and I've really enjoyed it."
Filmed in advance, Tybalt has had to keep the outcome of the series under wraps, which was made more difficult as he watched his older sister Hero reach the finals of the TV talent show, Must Be The Music.
"When Hero was being congratulated, he'd already won his show, but couldn't say anything," said his mother, who had a busy summer escorting both children to TV studios.
"They are different. Hero will work very hard, but Tybalt will do things when he wants to.
"I tried to sit him down and make him think of the 10 minute presentation he had to make for the final, but he just said, 'No - I've got it in here. I know why I made it and you can't put words in my mouth.'
"And he was right."