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CHARLOTTE, N.C. — A surveillance camera captured video of streetcar riders screaming and holding on in fear as Charlotte’s new trolley rolled down a hill and then crashed into an SUV on Saturday.

Officials with the Charlotte Area Transit System said Tuesday the cause of the crash appeared to be operator error.

The operator stopped the streetcar at Presbyterian Hospital to let passengers off, but the doors did not deploy. During the stop, he forgot to flip one switch that changes control operations between cabs.

Read more: WSOC