I am quite familar with Siberian roads by car in winter (including 2000 km on Kolyma road by -50°C) and in summer. I used paths in Siberian mountains (Vostoky Sayany)riding horses. I have already traveled in Uzbekistan (from Andijan to Samarkand via Khiva), Tadjikistan (From Dushanbe to Kyzyl Art via Wakhan) and a little bit in Kyrgyzstan (Sary-Tash to Osh). The question of sefe or not is not an issue for me. If local people, including kids and old people, travel on some ways, I do not see why I should avoid these ways. I just avoid dangerous people and people who drink alcohol.