What should you judge before passing on a two-lane road?

Before attempting to pass on a two-lane road, it is essential to judge the distance to the first oncoming vehicle. This is crucial for ensuring a safe passing maneuver. You need to have a clear understanding of how far away the oncoming vehicle is, which will help you determine if there is enough time and space to complete the pass without endangering yourself or others. If the oncoming vehicle is too close, it could result in a head-on collision, which can be extremely dangerous.

Other factors may also play a role in the decision to pass, but none of them directly address the immediate safety concern as effectively as judging the distance to incoming traffic. Evaluating the color of the vehicle ahead, the speed of the vehicle ahead, or the time of day is less critical in this scenario, as they do not provide direct information about the oncoming traffic's proximity and the safety of the passing maneuver.