The amount of space you need to cross traffic depends on which factors?

The correct choice highlights that the amount of space needed to cross traffic is influenced by both road conditions and oncoming traffic. When considering road conditions, factors such as the surface quality, visibility, and presence of obstacles can significantly affect a driver's ability to safely cross. For instance, slick or damaged roads can impact stopping distance and maneuverability, while poor visibility can hinder reacting to oncoming vehicles.

Oncoming traffic is equally important because it directly relates to the speed and distance of vehicles approaching from the opposite direction. Understanding the speed of these vehicles allows a driver to gauge whether there is sufficient time and space to execute the maneuver safely. Effective judgment requires combining these two aspects—ensuring that the roadway is suitable for crossing and that the timing with oncoming traffic is appropriate.

Other options only focus on a single factor: oncoming traffic, weather, or traffic lights—none of which fully account for all necessary considerations when crossing traffic. Thus, recognizing the influence of both road conditions and oncoming traffic provides a comprehensive understanding of the safest approach to crossing in any driving situation.