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See how the Positive Train Control safety system works

Prompted in part by a Southern California commuter train crash that killed 25 people, the federal government is requiring railroads to install a new GPS-based safety system on trains and tracks to make them safer. Here’s a look at how the system,

See how the Positive Train Control safety system works

Prompted in part by a Southern California commuter train crash that killed 25 people, the federal government is requiring railroads to install a new GPS-based safety system on trains and tracks to make them safer. Here’s a look at how the system,