thrombotic thrombocytopenic purpura. Description. Thrombotic thrombocytopenic purpura is a rare disorder that causes blood clots (thrombi) to form in small blood vessels throughout the body. These clots can cause serious medical problems if they block vessels and restrict blood flow to organs such as the brain, kidneys, and heart.
âTHE MOST IMPORTANT DRIVING TECHNIQUE TO AVOID CRASHES WHEN DRIVING IN ICY OR SNOWY CONDITIONS IS REDUCING SPEED AND INCREASING FOLLOWING DISTANCEâ. When you are driving on ice, you have to keep in mind that your wheels don't have as much traction as they do when you are driving on dry pavement.
Road Positioning and Lane Discipline. Where you position your car on the road is dictated by the road and traffic conditions you are experiencing. On your driving test you will need to keep a safe position at all times. In normal circumstances you should position your car in the centre of your half of the road - see image right. You should avoid driving too close to the kerb, as the road surface here is more uneven. If you accidentally clip the kerb you may lose control of the car.