The way KONKAN RAILWAY planned new TT for every trains during monsson and restrict their speed... NCR sholud also plan new TT for foggy season from DECEMBER-FEB and restricts trains speed i. e- VB, SHATABDI, RAJDHANI 90 kmph... DURANTO, AC SF, GARIB RATH to 80KMPH, And other mail express to 60kmph...