Frustrating delays hit 16 NYC subway routes on cold, wet Friday: ‘Doors took forever to even open’

Stand clear of the defective doors, please. Faulty doors in six subway different trains — along with a cluster of other unrelated mechanical, signal and passenger issues — caused a collective commuting headache for straphangers on a cold, wet Friday morning. Delays hit 16 of New York City’s 25 subway routes during the morning rush…