autoevolution 24 May 2021, 7:34 UTC · by Navigation apps and sat nav systems have become a must-have for the modern driver, no matter if they’re traveling to a region they don’t know, or they’re just trying to beat the crazy traffic in their home cities. 1 photo But as far as Irish Judge Seán Ó Donnabháin is concerned, using sat nav when driving on unknown roads is as dangerous as it gets, as the whole thing can sometimes become lethal given the distraction a navigation system could end up causing. The judge expressed his thoughts in a recent case involving an accident caused by a Czech lorry driver using the sat-nav system in the cabin to figure out which way to go, only to end up smashing into another truck approximately two years ago.