What signal indicates to "stop at the next passenger station" when running?

The signal indicating "stop at the next passenger station" is represented by three consecutive lights illuminated (OOO). This signal is a standard indication in the LIRR Operating Rule Book that informs train crews they need to prepare to stop at the upcoming station where passengers will be boarding or disembarking.

The use of three lights distinctly communicates this operational requirement, ensuring that train operators remain alert to the need to halt at the designated station for the safety and convenience of passengers. The clarity of the signal allows for effective communication along the rail network, maintaining a consistent operational standard for all train crews.

The other signals, whether they represent two dashes, four dashes, or a single dash, are used for different operational commands and do not relate to the specific instruction to stop at the next passenger station. Understanding the unique meanings of these signals is crucial for safety and efficiency in train operations.