SUBSECTION SPEED LIMITING METHOD AND SYSTEM FOR VEHICLE

The present invention provides a method and system for segmentally limiting speed of vehicle. The method comprises: receiving characteristic parameters of a route sent by a vehicle monitoring platform, and respectively expanding a plurality of road segments of the route into a plurality of rectangles according to the characteristic parameters of the road; dividing the plurality of rectangles into blocks sequentially, wherein each block comprises at least two rectangles; calculating a minimum enclosing rectangle of the at least two rectangles, and counting vertex information of the minimum enclosing rectangle of each block so as to establish a hash table; obtaining an instant longitude and latitude of a moving vehicle, searching in the hash table according to the instant longitude and latitude so as to determine a block where the vehicle is located, and judging a road segment where the vehicle is currently located by adopting a preset algorithm; and comparing a current speed of the vehicle with a limiting speed of the road segment where the vehicle is currently located, judging whether the vehicle exceeds the limiting speed; if yes, uploading excessive speed information and the instant longitude and latitude of the vehicle to the vehicle monitoring platform. The present invention can makes the vehicular terminal to automatically judge whether the vehicle exceeds the speed limit, has an accurate judgment, a high instantaneity and a low memory usage.