Audi to sell cars that talk to traffic lights

Select models sold in US will show countdown to signals turning green - and warn when it's too late to beat a red

The German carmaker Audi is rolling out technology that will allow its vehicles to communicate with traffic lights.

Audi of America, which is owned by Volkswagen, said select 2017 Q7 and A4 models built after 1 June 2016 would be equipped with the system.