I have recently noticed that when I drive about the city (Wellington) at ceratin spots a strange buzz-clicking sound comes out of the car's radio speakers .... a sort of 'Tzzzicker, tzzzicker, tzzzicker', usually in bursts of three.
This also only seems to happen when I have my mobile phone in the car.
Can anyone shed light on this phenomenon?
It happens when entering the southern portal of Terrace Tunnel, when entering the motorway off Tinakori Road (heading north), and a couple other spots around town.
Maybe interference from those Transit NZ signs, or the pole-mounted cameras?
R.