Bay Area Rapid Transit (BART) Practice Exam 2025 - Free BART Practice Questions and Study Guide

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What does a lit latch light indicate after coupling a D car Y end to an E car?

A successful mechanical coupling

A lit latch light after coupling a D car Y end to an E car signifies a successful mechanical coupling. This light serves as an indicator that the mechanical components of the coupling mechanism have sufficiently engaged, ensuring that the two cars are properly linked for operation. The absence of a lit latch light would suggest a potential problem with the coupling, such as misalignment or improper connection, which could lead to operational issues during transit.

Understanding the functionality of the latch light is crucial for ensuring safe and reliable train operations. Proper mechanical coupling is essential for the stability of the train, and the lit latch light provides the operator with immediate visual confirmation that the connection has been successfully achieved.

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Need for adjustment

Potential power issue

An error in the connection

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