$ 0 0 影片為30fps,一幀0.033秒●T+0幀》已辨識到車輛,未鎖定(顯示淺灰色)●T+1幀》鎖定車輛(顯示深灰色),開始減速●T+6幀》半台車過中線●T+15幀》顯示半台車過中線,和實際情況有0.3