Gaps - Breaks in the traffic stream long enough to permit vehicles or pedestrians access across or into the traffic stream. Gore - The V-shaped area that separates through-traffic from exiting or entering traffic on freeways and highways. Grade Separation - A crossing that uses an underpass or overpass to eliminate conflict points.
Although blood pressure varies from person to person, a blood pressure reading of 90 millimeters of mercury (mm Hg) or less systolic blood pressure (the top number in a blood pressure reading) or 60 mm Hg or less diastolic blood pressure (the bottom number) is generally considered low blood pressure.
Low blood pressure means that your blood pressure is lower than normal. Another name for low blood pressure is hypotension (say hy-poh-TEN-shun). In most healthy adults, low blood pressure does not cause problems or symptoms.In fact, it may be normal for you. For example, people who exercise regularly often have lower blood pressure than people who are not as fit.nother name for low blood pressure is hypotension (say hy-poh-TEN-shun). In most healthy adults, low blood pressure does not cause problems or symptoms. In fact, it may be normal for you. For example, people who exercise regularly often have lower blood pressure than people who are not as fit.