Horn

Cars are equipped with loud electric horns, not little bells, as are motorcycles. So, why isn't this the case with bicycles that get ridden in traffic? That's the thinking behind Sonic Grip, which packs a 100-decibel siren into a bike's handlebar grips.

Four years after introducing its first ear-splitting air horn for motorcycles, Screaming Banshee has introduced the Shockwave. The new design retains the features of the original, with adjustable dual volume action and pulsating headlight coupling, offers a bigger sound in a smaller form factor.

One of the big reasons people give for not commuting by bicycle is the fear that drivers won't notice them on the road. That's why the designers of the 125-decibel Loud Bicycle Horn have concentrated their efforts on making sure that cyclists are heard.

Not satisfied with the one-size-fits-all approach to bicycle crash aversion, Brooklyn-based inventor Peter Pottier has developed Mybell, a programmable horn and light designed to give your bike its own unique warning system by loading it with just about any sound file you like.

Chicago-based company Gramovox has merged the old with the new in its Bluetooth Gramophone. The fusion of vintage audio device and modern technology takes the form of a 3:4 scale replica of the R3 Magnavox horn speaker and packs a Bluetooth 3.0 module to allow wireless connection of mobile devices.

The ORP Smart Horn combines a two-tone bike horn with 87-lumen LED twin lights.

The Plug & Play Screamer is a more compact, easier-to-install version of the extremely loud Screaming Banshee motorcycle horn.

The Screaming Banshee is an add-on 139-decibel motorcycle horn, that allows riders to still use their regular horn as needed.

The Hornster is a custom-built bike that is designed around what is billed as the world's loudest bicycle horn.