Many modern cars have electronic turn signals that don't make the familiar clicking sound with each flash, so Volvo took to the forest to craft a substitute.

Interestingly, the clicking sound that turn signals make wasn't intentional, but rather a mechanical byproduct of the mechanism used to flash the light.

In today’s hyper-engineered world, however, the turn signal sound has become a point of extensive acoustic branding; different manufacturers have distinctive blinker sounds integrated into what ...