"Volvos will soon be capable of squawking their presence to cyclists wearing a helmet from cycling brand POC, letting the Lycra louts get out of the way of the four-wheeled Scandinavian middle lane hoggers.
The idea behind the new technology from Ericsson is that both the car and the bicycle can determine when their proximity and direction means one imperils the other, and warns both the driver and the rider.
Using a smartphone app for cyclists such as Strava, the cyclist’s position can be shared through the Volvo cloud to the car, and vice versa. If an imminent collision is calculated, both road users will be warned - letting them take the necessary action to avoid an accident
...."
http://www.theregister.co.uk/2014/12/22/beware_the_volvos_poc_cycle_helmet_uses_ericsson_tech_to_bleep_a_warning/
posts
