2015 e kadar olan otobüslerin çoğunun ön kapısında güzel gizlenmiş bir buton vardır. Bu butona basarak kapatılır. Daha sonra elektrik şalteri kapatılarak yabancıların açamaması sağlanır. Elektrik şalter bölümü ayrıca anahtarlıdır.
Yeni nesillerde de kumandalıdır.
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