What is the sighting distance for Inner Suburban Area?

What is the sighting distance for Inner Suburban Area?

• A. 455m
• B. 660m
• C. 910m
• D. 1120m

Answer: (A)

Sighting distance is the distance you must be able to see a hazard and stop safely. In Inner Suburban Area, this requirement is 455 metres. This shorter distance reflects operating conditions in built-up zones where speeds are lower, signals and crossings are closer together, and there are more objects to observe, so less distance is needed to react and brake within safe limits. Longer distances are used in areas with higher speeds or fewer obstructions, where more distance is required to bring the train to a stop. Therefore, 455 metres is the correct sighting distance for Inner Suburban Area.

Sighting distance is the distance you must be able to see a hazard and stop safely. In Inner Suburban Area, this requirement is 455 metres. This shorter distance reflects operating conditions in built-up zones where speeds are lower, signals and crossings are closer together, and there are more objects to observe, so less distance is needed to react and brake within safe limits. Longer distances are used in areas with higher speeds or fewer obstructions, where more distance is required to bring the train to a stop. Therefore, 455 metres is the correct sighting distance for Inner Suburban Area.