What document provides specific information regarding the location of chemicals in railcars?

The Consist is a document that details the cars included in a train and provides vital information about the contents of those cars, including the specific chemicals being transported in railcars. By listing each railcar and its corresponding contents, the Consist allows first responders and emergency personnel to quickly identify hazardous materials, enabling them to plan an appropriate response in the event of a incident involving a train.

In contrast, the Bill of Lading is a shipping document that serves as a receipt for goods and outlines the terms of the cargo transport. While it can contain essential information about the shipment, it is not as focused on the layout of railcars as the Consist. The Safety Data Sheet (SDS) contains extensive details about hazardous substances, including safety and handling information, but does not provide the specific arrangement of chemicals within railcars. Carriage Instructions might offer general guidance on transporting items securely but do not typically outline specific chemical information or the location of those chemicals in a train's configuration. Thus, the Consist is the most pertinent document regarding the location of chemicals in railcars.