How Much Vitamin D Should You Take? 4.83 (96.67%) 30 votes The safe dose of vitamin D supplementation to get most of the population to the optimal level is 2,000 IU a day, but the elderly and overweight may need more.
roadblock. 1  n any condition that makes it difficult to make progress or to achieve an objective. 2  n a barrier set up by police to stop traffic on a street or road in order to catch a fugitive or inspect traffic etc.
Roadrageous is an 8-hour classroom course addressing the root causes of aggressive driving. Produced by the American Institute for Public Safety, the training combines instruction, skits, games, videos, student-instructor interaction and student-student interaction to help drivers acknowledge their negative driving habits and attitudes.