Complex sentence: As of 2016, the (then current) PATH regulations prohibits all photography, including photography by tourists and by railfans, unless a person is accompanied by a PATH representative and has been issued a permit by PATH.
Split into simpler sentences: As of 2016, the (then current) PATH regulations prohibits all photography, including photography by tourists and by railfans. A person is only allowed to take photographs if he/she is accompanied by a PATH representative and has been issued a permit by PATH.