When following large wehicles that block your view of the road ahead give yourself how many seconds cushion of space in front of your vehicle?

When following large vehicles that block your view of the road ahead, it's recommended to give yourself at least a 4-second cushion of space in front of your vehicle. This extra distance allows you more time to react to any sudden stops or obstacles that may arise. Additionally, it helps ensure that you have a clear sightline when the large vehicle turns or changes position.