At railroad crossings with a stop sign, when can drivers proceed?

At railroad crossings marked with a stop sign, drivers must come to a complete stop and assess the situation before proceeding. The correct option emphasizes the necessity for drivers to determine that no train is coming before they move forward. It's essential to prioritize safety at these crossings because trains can approach quickly and silently.

Drivers should look and listen for trains and be attentive to any signals or signs indicating whether it's safe to continue. This careful evaluation helps prevent accidents and ensures that drivers are fully aware of their surroundings.

Other choices might suggest less cautious approaches or rely on potentially misleading cues. For example, assuming no train is coming based on a personal judgment without a thorough check could be dangerous. Overall, the correct answer underscores the importance of vigilance and caution when navigating railroad crossings.