Khardung La is the only entrance to Shyok and Nubra Valley. It is located in the Karakoram Range which is 40 km away from Leh. Only motor can go through Khardung La road. Being world’s highest motorable road, it provides you stunning views of the valley and mountains while traveling through this region. The people who like adventure should go through Khardung La to have ultimate thrill. Some specific time is fixed for the cars and motorbikes traveling from Leh to Khardung La and Khardung La to Leh. 9 AM to 1 PM is fixed for vehicle driving from Leh to Khardung La and 1 PM to 5 PM from Khardung La to Leh. Due to high altitude, the weather can become worst anytime so the preparation must be strong to prevent this condition.
Source: https://timesofindia.indiatimes.com/travel/things-to-do/dare-to-drive-on-indias-most-dangerous-roads/as58805510.cms