What is the recommended safe following distance for a combination vehicle?

The recommended safe following distance for a combination vehicle is at least 4 seconds at normal speeds and more in adverse conditions. This guideline is based on the need for longer stopping distances associated with larger vehicles, which may take more time and distance to come to a full stop.

When following another vehicle, maintaining a 4-second gap allows the driver to have adequate time to react to sudden stops or emergencies ahead. In adverse weather conditions, such as rain, fog, or snow, increasing this distance is critical because reduced traction can significantly impact braking performance. The concept of time rather than distance allows drivers to adjust their following distance based on speed and road conditions, ensuring a safer driving environment.