Answer: merge & 4 seconds
Explanation:
Anytime you want to merge with other traffic, you need a gap of about 4 seconds.
When merging with other traffic, it's important to find a suitable gap that allows you to enter the flow of vehicles safely. The recommendation of a 4-second gap is a general guideline for maintaining a safe distance from the vehicle in front of you when merging. This allows for enough time and space to assess the traffic conditions, adjust your speed, and smoothly merge without causing disruptions or hazards.
The 4-second gap provides a buffer in case the vehicle in front of you suddenly slows down or if unexpected changes occur in the traffic flow. This gap is calculated by selecting a reference point (e.g., a road sign or landmark) and counting the seconds it takes for the vehicle in front of you to pass that point. Ideally, you should have at least a 4-second gap to ensure a safe and controlled merge.
Remember, this is a general guideline, and the appropriate gap may vary based on specific road conditions, speed limits, and the overall flow of traffic. Always use your judgment and adapt to the specific circumstances when merging.
Hope this helps!