What is the recommended following distance at high speeds?

Answer: C — 3 seconds

The recommended following distance at high speeds is typically considered to be at least three seconds. This recommendation is particularly important because higher speeds reduce the amount of time a driver has to react to sudden changes in traffic conditions. A three-second following distance provides a safer buffer, allowing for adequate reaction time in the event of unexpected stops or emergencies. At high speeds, factors such as increased stopping distance and reaction time come into play. A three-second gap gives drivers more time to assess road conditions and respond appropriately, which is critical for safety. This following distance helps ensure that drivers can avoid potential collisions and maintain control of their vehicle. In contrast, shorter following distances, such as one or two seconds, may not offer enough time for safe reaction at high speeds, increasing the risk of accidents. A four-second distance, while providing even more time, may be excessive for typical driving conditions, leading to unnecessary gaps in traffic. Therefore, a three-second rule strikes a good balance, promoting safety while maintaining reasonable traffic flow.