Ambulances in the Swedish capital are testing a KTH - made system ( 2013 ) that interrupts car radios with a warning message when they are responding to a nearby crisis . The only requirement is that your car's FM tuner support the Radio Data System format, which is common in the cars you see on the road. The experiment addresses the fact that some drivers may not hear emergency calls and therefore fail to respond to their presence quickly enough . But the experiment has also raised concerns that drivers on unaffected streets may also receive a warning . This , which will be tested on handful of ambulances in Sweden , will be trialled in Q1 of this year .
Ambulances in the Swedish capital are testing a KTH - made system ( 2013 ) that interrupts car radios with a warning message when they are responding to a nearby crisis . The experiment addresses the fact that some drivers may not hear emergency calls and therefore fail to respond to their presence quickly enough . But the experiment has also raised concerns that drivers on unaffected streets may also receive a warning . This , which will be tested on handful of ambulances in Sweden , will be trialled in Q1 of this year .