Sirens

The prototype iHear display, rigged into a test vehicle

Automotive

iHear system promises simple, inexpensive siren detection for drivers

When you hear a siren while driving, there's always that moment of indecision as you try to figure out what direction it's coming from. The new iHear system is designed to help, by indicating the direction on a dashboard display.

Cerence EVD can reportedly tell the difference between the sirens of various types of emergency vehicles, such as ambulances, fire engines and police cars

Automotive

In-car system alerts drivers to the sound of sirens

It can certainly be a rattling experience for drivers, when they suddenly realize that the sound of an emergency vehicle's siren is coming from someplace nearby. Cerence's EVD system is designed to help, by hearing sirens before drivers do.

A Sonic Grip-equipped bike, with the siren visible on the left-hand grip

Bicycles

Sonic Grip puts a siren on cyclists' bars

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.