At best the cab door will have a normally keyed lock, but there's plenty of glass to break out so that won't stop a determined mischief maker.
I kinda hoped it was like a car’s windshield.
Some operators retrofit in plexiglass or in rare cases bulletproof material, but that is for special applications.
At best the cab door will have a normally keyed lock, but there's plenty of glass to break out so that won't stop a determined mischief maker.