Emergency Driving

Rollover Information and Prevention Consumers Union (CU) petitioned The National Highway Traffic Safety Administration (NHTSA) in 1996 to develop and conduct dynamic tests for vehicle rollover propensity and to publish the results for consumers. Simply put, dynamic tests involve measuring vehicle behavior while it is in motion performing a task. NHTSA granted that petition in 1997 and commenced work developing such a test program. In 2001, however, they changed course and published a rollover resistance program based only on each vehicle’s static stability factor (SSF). SSF had been considered earlier as one method of evaluating certain aspects of rollover propensity, in particular, tripped rollover. It is a calculation based on two physical dimensions of the vehicle: center-of-gravity height and track-width (SSF = T/2H, with H being the center-of-gravity height and T being the track-width). Rollovers are considered tripped rollovers when the vehicle slides into a curb or other obstacle and trips over that obstacle. This is the most frequent type of rollover crash. Untripped rollovers, on the other hand, usually occur as a result of emergency steering maneuvers on the roadway and generally do not involve tripping over an obstacle
HOW TO DETECT SURVEILLANCE AND SHADOWING. PART II. COUNTERSURVEILLANCE. For effective and covert detection of shadowing countersurveillance technique is often used. Countersurveillance is observation of "tails", shadowing the target, by onlookers, placed at temporary points along the route. The fact is that detectives, shadowing the subject, will most likely look quite natural in the eyes of the subject. But for detached onlookers their activity may be rather inadequate. For example, their attempts to disappear from the eyes of the subject when he turns back can be imperceptible for the subject, but near-by people, who know whereat to focus their attention, will spot them. Therefore countersurveillance enables to reveal the fact of shadowing, determine its performers, and possibly, the sponsor. The data obtained as a result of countersurveillance will help to determine the place and time of the planned assault