Shock The usual results of drops and shocks fall into two categories protective or containment qualities are reduced bending, distortion, or, ultimately, breakage Shock During Rail Transport: Railcar coupling: boxcars assembled into trains by moving individual cars, The average shunting speed is 8. 4 kilometres per hour. This is the average speed; some of the impacts are at greater speeds! (Figure 12.3)Shock ⚫ The usual results of drops and shocks fall into two categories: protective or containment qualities are reduced bending, distortion, or, ultimately, breakage Shock During Rail Transport: Railcar coupling: boxcars assembled into trains by moving individual cars; The average shunting speed is 8.4 kilometres per hour. This is the average speed; some of the impacts are at greater speeds! (Figure 12.3)