blechlawine

In a sentence

• Die Blechlawine auf der Autobahn war kaum zu bewältigen.

  The avalanche of cars on the highway was almost insurmountable.

  Here, 'Blechlawine' metaphorically describes a dense traffic jam, likened to a 'metal avalanche'.

• Ich fuhr am Samstagmorgen, um die Blechlawine zu vermeiden.

  I drove on Saturday morning to avoid the avalanche of cars.

  Here, 'Blechlawine' is used to plan around heavy traffic traditionally expected at certain times.

• Die Ferienzeit bringt oft eine Blechlawine auf den Landstraßen mit sich.

  The holiday season often brings an avalanche of cars to the country roads.

  Here, 'Blechlawine' describes the increased traffic volume caused by holiday travelers on less urban roads.