On Tuesday, July 11, 2006, about 5:06 p.m., central daylight time, the last car of northbound Chicago Transit Authority Blue Line train number 220 derailed in the subway between the Clark/Lake and Grand/Milwaukee stations in downtown Chicago, Illinois. About 1,000 passengers were on board the eight-car rapid transit train. Following the derailment, the train came to a stop, and electrical arcing between the last car and the 600-volt direct current third rail generated smoke. The single operator in the lead car received a number of calls on the train intercom. The operator exited the control compartment, stepped onto the catwalk, and walked beside the train to investigate.
| Author: National Transportation Safety Board |
| Publisher: Createspace Independent Publishing Platform |
| Publication Date: Feb 19, 2014 |
| Number of Pages: 72 pages |
| Binding: Paperback or Softback |
| ISBN-10: 1495406520 |
| ISBN-13: 9781495406522 |
