What is frontier insurance?
Frontier insurance is a liability insurance for vehicles of non-EU countries. When non-EU citizens travel to an EU country with their vehicle; they will have to take out separate liability insurance, namely frontier insurance.
Frontier insurance ensures that vehicles of non-EU citizens are covered by liability insurance within the EU because in the EU, liability insurance is compulsory for vehicles.
Frontier insurance is also necessary when you buy a vehicle that is registered in Great Britain and transfer it to Germany.