Which option is NOT a reason passengers may be injured during transit?

Maintaining good space margins while driving is a fundamental practice for ensuring safety on the road. By keeping adequate distance from other vehicles, a driver enhances their ability to react to changes and emergencies, which ultimately reduces the risk of accidents and potential injuries to passengers. This proactive approach helps to create a safer environment, as it minimizes the chances of collisions and allows for smoother driving.

In contrast, the other options directly contribute to potential hazards. Driver distraction, sudden stops, and unsafe vehicle conditions all represent situations that could lead to injuries during transit. Distractions can take the driver's attention away from the road, sudden stops can lead to abrupt movements that may injure passengers, and unsafe vehicle conditions can compromise overall safety. Thus, maintaining good space margins is a crucial safety measure and does not contribute to passenger injuries.