My information comes from a family member who operates the antiquated equipment. As long as it is being maintained, it works exactly as designed. It is a very

My information comes from a family member who operates the antiquated equipment. As long as it is being maintained, it works exactly as designed. It is a very well engineered system. What happened in the past few years is that the MTA allowed maintenance schedules to slip, hence the problems. (Edit: to be clear, yes, there are limits to what the old system can do and modernization can improve a few things. Those shortcomings are not really what is causing the problems that we are experiencing lately. Modern equipment will also require maintenance and will fail when that maintenance is not performed.)