(a) Offense defined.--A person is guilty of a misdemeanor of the second degree if he enters into or upon any railroad train, locomotive, tender or car thereof, or into or upon any automobile or other conveyance used for the carrying of freight or passengers, having in his custody or about his person any nitroglycerine or other explosive, other than as freight regularly shipped as such.

(b) Powers of crew.--The conductor or person having charge and control of any railroad train, coach, or other conveyance for the carriage of freight or passengers, may arrest any person found violating the provisions of this section and detain such person until reaching some place, where such person may be delivered to a constable or other police authority.

(c) Venue.--It shall be lawful to prosecute such offenders in any county through which said public conveyance passes, without reference to the place where such offenders were arrested.