Today I found this guide which is very useful to be prepared before driving on high and dangerous mountains.
The guide is providing complete maps with really vital tips to keep your life safe.
“Color relief maps and more than 150 new mountain pass and grade locations have been added to R&R Publishing’s 1999 editions of Mountain Directory West and Mountain Directory East. Together, the books provide locations and descriptions for more than 700 mountain passes and steep grade locations in 22 states, as well as other vital information for anyone driving a large or heavy vehicle. In Mountain Directory East, the introduction notes that elevation by itself does not indicate a grade’s difficulty; the change in elevation, depicted in the book as percentages, is the critical factor.”
Family Motor Coaching
The Travelling Lab 