What should you do when approaching a railroad crossing without warning devices?

When approaching a railroad crossing without warning devices, it is crucial to look for trains in both directions before proceeding. This practice is essential for ensuring your safety and the safety of others. Visibility can be limited at railroad crossings, and trains can approach more quickly than they seem. By checking in both directions, you can gauge whether a train is on its way and make an informed decision about crossing safely.

The other choices do not prioritize safety. Speeding up to cross quickly may increase the risk of a collision with a train, as you may not have enough time to react if one is coming. Only looking to the right neglects potential dangers from the left, where trains may also approach. Pausing for 10 seconds before crossing doesn't adequately assess the situation; mere waiting does not replace the necessity to actively look for oncoming trains in both directions. This is why looking before proceeding is the fundamental safety action at railroad crossings lacking warning devices.