New post on http://twitter.com/CaltransDist10 : Driving on Mountain Highways in the Sierra Nevada? Make sure to have chains in your vehicle and an emergency bag in case something goes awry. Also, drive under control - spinouts, crashes and off-the-road skis are making a mess of SR-4, SR-108 & SR-88. Please drive with patience! http://pic.twitter.com/IsL3MvCZgE