How many contact shoes are found on a SMEE car?

A SMEE (Single Memory Element Equipment) car typically features four contact shoes. These contact shoes are critical components that facilitate the electrical connection between the train and the power supply, enabling the train to draw power from the overhead line or third rail. Each set of contact shoes is strategically positioned to ensure a consistent and reliable power feed, which is essential for the operation of the train's systems and traction motors.

The design of having four shoes not only enhances reliability but also provides stability during operations. This configuration allows for better distribution of wear and tear, ensuring that no single shoe bears too much load. It also improves the ability of the train to maintain electrical contact even when traveling over switches or other track irregularities. Thus, the choice indicating four contact shoes accurately reflects the operational design and electrical requirements of SMEE cars.