Why is backup lighting used during a traction outage?

Why is backup lighting used during a traction outage?

• A. It provides visibility and safety for passengers and crew.
• B. It wastes power and should be avoided.
• C. It is only for cosmetic appeal.
• D. It should be used only if the main lights fail completely.

Answer: (A)

Backup lighting during a traction outage is used to provide visibility and safety for passengers and crew. When traction power is interrupted, the main lighting may go out, leaving the car dark. The backup system stays on or activates automatically to deliver enough light for people to see exits, read signs, and move safely, while crew can assist and manage the situation. This safety function is why backup lighting exists. It’s not about wasting power or cosmetic appearance, and it isn’t limited to situations where all main lights fail; it’s intended to be available anytime an outage occurs to maintain safe conditions.

Backup lighting during a traction outage is used to provide visibility and safety for passengers and crew. When traction power is interrupted, the main lighting may go out, leaving the car dark. The backup system stays on or activates automatically to deliver enough light for people to see exits, read signs, and move safely, while crew can assist and manage the situation. This safety function is why backup lighting exists. It’s not about wasting power or cosmetic appearance, and it isn’t limited to situations where all main lights fail; it’s intended to be available anytime an outage occurs to maintain safe conditions.