▁in ▁these ▁situations ▁to ▁gain ▁access . ▁ ▁Pan ic ▁bars ▁are ▁often ▁used ▁in ▁buildings ▁so ▁that ▁a ▁door ▁locked ▁from ▁the ▁exterior ▁can ▁quickly ▁and ▁easily ▁be ▁opened ▁from ▁the ▁inside ▁in ▁the ▁event ▁of ▁a ▁fire ▁or ▁other ▁emer gency . ▁ ▁Ve h icle ▁doors ▁▁ ▁There ▁may ▁be ▁an ▁increased ▁risk ▁of ▁tra pping ▁hands ▁or ▁fingers ▁in ▁car ▁doors ▁compared ▁to ▁other ▁types ▁of ▁doors , ▁due ▁to ▁the ▁proxim ity ▁in ▁which ▁the ▁occup ant ▁s its . ▁In ▁some ▁car ▁acc idents , ▁injury ▁to ▁occup ants ▁from ▁the ▁movement ▁of ▁car ▁doors ▁may ▁occur . ▁ ▁B icy cl ists ▁cy cling ▁on ▁public ▁roads ▁fear ▁door ing : ▁collision ▁with ▁an ▁ab rupt ly ▁opened ▁vehicle ▁door . ▁Because ▁cycl ists ▁often ▁ride ▁near ▁park ed ▁cars ▁along ▁the ▁side ▁of ▁the ▁road ▁they ▁are ▁particularly ▁vulner able . ▁ ▁A ircraft ▁doors ▁ ▁Do ors ▁which ▁lead ▁from ▁interior , ▁press ur ized , ▁sections ▁of ▁an ▁aircraft ▁to ▁exterior ▁or ▁un press ur ized ▁areas ▁can ▁pose ▁extreme ▁risk ▁if ▁they ▁are ▁in ad vert ently ▁opened ▁during ▁flight . ▁This ▁can ▁be ▁mit ig ated ▁by ▁having ▁doors ▁that ▁open ▁in ward ly ▁and ▁are ▁designed ▁to ▁be ▁forced ▁into ▁their ▁door ▁frames ▁by ▁the ▁internal ▁cabin ▁pressure ▁– ▁most ▁cabin ▁doors ▁are ▁of ▁this ▁type . ▁However , ▁an ▁out ward ▁opening ▁door ▁is ▁often ▁advantage ous ▁for ▁cargo ▁doors ▁to ▁maxim ise ▁available ▁space , ▁and ▁these ▁need