▁fire ▁ex ting u ishing ▁system ▁was ▁installed ▁during ▁the ▁reconst ruction ▁of ▁the ▁tunnel . ▁The ▁pip es ▁built ▁under ne ath ▁the ▁tunnel ▁are ▁immediately ▁filled ▁with ▁ 3 5 ▁cub ic ▁metres ▁of ▁water ▁which ▁is ▁then ▁sp rayed ▁via ▁special ▁spr ink lers ▁that ▁line ▁the ▁tunnel . ▁It ▁is ▁complement ed ▁by ▁an ▁efficient ▁ha z ard ▁monitoring ▁system . ▁The ▁new ▁communication ▁system ▁makes ▁it ▁possible ▁to ▁call ▁for ▁help ▁in ▁case ▁of ▁an ▁emer gency . ▁The ▁tunnel ▁was ▁opened ▁after ▁major ▁reconst ruction ▁on ▁ 1 7 ▁November ▁ 2 0 0 9 . ▁After ▁the ▁reconst ruction , ▁the ▁speed ▁limit ▁of ▁the ▁traffic ▁in ▁Ka unas ▁tunnel ▁has ▁been ▁increased ▁to ▁ 8 3   km / h . ▁ ▁References ▁ ▁Category : Build ings ▁and ▁structures ▁in ▁Ka unas ▁Category : R ail way ▁t unn els ▁in ▁Lith u ania ▁Category : Transport ▁in ▁Ka unas ▁Category : T unn els ▁completed ▁in ▁ 1 8 6 2 ▁Category : 1 8 6 2 ▁establish ments ▁in ▁the ▁Russian ▁Empire <0x0A> </s> ▁Hyper ion ▁Entertainment ▁CV BA ▁( former ly ▁Hyper ion ▁Entertainment ▁V OF ) ▁is ▁a ▁Belg ian ▁software ▁company ▁which ▁in ▁its ▁early ▁years ▁focused ▁in ▁port ing ▁Windows ▁games ▁to ▁Am iga ▁OS , ▁Linux ▁and ▁Mac ▁OS . ▁In ▁ 2 0 0 1 , ▁they ▁accepted ▁a ▁contract ▁by ▁Am iga ▁In cor por ated ▁to ▁develop ▁Am iga OS ▁ 4 ▁and ▁mainly