3 ms·Smaller gaps means higher throughput, at a given speed.by HPsquared 3y agoSmaller gaps means higher throughput, at a given speed.bluGill 3y agoAt the expense of safety. One of the reasons why cars kill so many people every year.harkinian 3y agoIt's not just safety. Small-yet-safe gaps exacerbate temporary jams on highways, or possibly even create them.HPsquared 3y agoIndeed it's a balance, as in most things. Raw numbers against safety and stability.