It is the first time Dobrindt has put a date on the introduction of a motorway foreigner fee.
Critics argue it is against European Union discrimination laws, but its supporters say it can be introduced by reducing road tax on Germans and then making everyone pay a charge to use the motorways.
In doing so foreigners would have to start paying, while Germans would pay the same amount as before as their road tax would have been reduced.
The government hopes to raise tens of millions a year from the charge to help fill the black hole in Germany’s infrastructure pot.
"Even those vehicles from abroad which use German roads without paying road tax will participate in the financing," Dobrindt said.
But Dobrindt claimed it was a “matter of justice” that all drivers who use German roads pay.
The Christian Social Union (CSU) made introducing the toll on foreign drivers one of its election pledges during last year’s campaign.
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