Easiest route from most Southern California locations.
It is a bit longer, but is the most scenic.
Less mountain driving and least amount of traffic.
During high traffic (holidays and peak weekends), try to avoid HWY 330 (Running Springs). HWY 38 (Redlands) and HWY 18 (Lucerne Valley) have the least amount of traffic. Here are more holiday and weekend travel tips.
It is a good idea to choose your route depending on weather conditions and day of the week, and remember to always carry chains in your vehicle when traveling in the mountains during winter. Slow down when you are driving on a snowy or icy surface. And always remember that it is the law that you must use a turnout if you are travelling below the speed limit and have 5 or more vehicles behind you.