Extra widening as per IRC 38 :1988 for 2lane road.

Regarding extra widening for 2 lane road as per IRC 38 :1988.

System is taking extra widening for the curve having radius more then 300 meter. As per IRC 38 :1988. for the plain and rolling terrain, no extra widening required for the curve having radius more than 300 meter.

can we provide extra widening by importing the file as we do in Super elevation?