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.
âThe second number - the diastolic blood pressure - is the bottom number and that is the lowest levels your resting pressure - the lowest level your blood pressure reaches. âThis measures how elastic your blood vessels are, she added. Dr Macnair said high blood pressure is consider to be anything over 139/89. GETTY.