Chronicle: How common is it for trains to transport toxic chemicals?

When train 32N derailed in East Palestine, the NTSB says a total of 38 rail cars left the tracks.Several of them carried vinyl chloride, but it was not the only toxic chemical on board. We have a visual breakdown of the chemicals in the many different derailed cars below: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(App users, click here to see the breakdown)Pittsburgh's Action News 4 reporter Paul Van Osdol explores how common it is for trains to transport toxic chemicals along tracks that run right through the hearts of neighborhoods.