CBC coupling does jerk when accelerating and decelerating and is more pronounced as the no of coaches increase. You will find lesser jerks in a 10 coach train than a 16 coach train , which will still be lesser than a 24 coach train.
At present most of the express and superfast trains have more than 15 rakes. Considering this, jerks are here to stay to make journey uncomfortable. Note: Even using toilet seems dangerous.
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