CAPE TOWN — A train crash at a station near Johannesburg on Tuesday derailed one rail car and injured at least 226 people, adding to concerns about rail safety and oversight in South Africa after the second serious accident in a week.

“Six to seven” people suffered moderate injuries, and 159 were taken to the hospital after the crash in Germiston, according to Eric Moloka, a spokesman for the Ekurhuleni Municipality Emergency Services. He added that there were no serious injuries.

“One train was stationary. The train in motion hit it at the back,” Mr. Moloka said. “The third coach from the rear then derailed, causing more injuries. But people were not seriously injured.”

The accident came five days after a train crashed into two vehicles at a crossing, killing at least 19 people and injuring hundreds more, about 110 miles to the southwest, near Kroonstad.