Rear-end collision

About: Rear-end collision is a research topic. Over the lifetime, 618 publications have been published within this topic receiving 5666 citations. The topic is also known as: shunt.

Apparatus for reducing damage to vehicle at rear-end collision

Abstract: PROBLEM TO BE SOLVED: To provide an apparatus for reducing damage to a vehicle at a rear-end collision, which absorbs impact energy due to a rear-end collision between a vehicle and another vehicle by cushioning, and prevents or reduces damages at the rear-end collision.SOLUTION: A shock absorber 11, which can be extended and contracted between a deployment position where it protrudes rearward beyond the rear end of a vehicle 1 and a storage position forward of the deployment position, is fixed between a rear underrun protector (RUP) 4 and an RUP bracket 5. When another vehicle collides with the vehicle 1 from the rear and load is input to the RUP 4, the shock absorber 11 is contracted forward and absorbs the impact energy of a rear-end collision by cushioning. In the case of a comparatively slight rear-end collision where impact energy is almost absorbed until the shock absorber 11 is contracted up to a contraction limit position located between the deployment position and the storage position, the contraction of the shock absorber 11 is limited by the contraction limit position, so that damages to the vehicle 1 and another vehicle at the rear-end collision can be prevented.

Evaluation of rear-end collision data for determining vehicle rear-lighting and signaling priorities

Abstract: USING THE WASHTENAW COUNTY (MICHIGAN) ACCIDENT-DATA FILES, AN ANALYSIS OF REAR-END COLLISIONS INVOLVING TWO OR MORE VEHICLES WAS CARRIED OUT TO ASSIST IN THE DEVELOPMENT OF VEHICLE MARKING AND SIGNALING SYSTEMS, BY ASSOCIATING THE RELATIVE FREQUENCIES OF SUCH INJURY- PRODUCING COLLISIONS WITH THE ACTION OF THE VEHICLE STRUCK. ON COUNTY ROADS AND CITY STREETS, VEHICLES MOVING STRAIGHT OR STOPPING WERE STRUCK ABOUT FIVE TIMES AS OFTEN AS THOSE TURNING. ON LIMITED-ACCESS HIGHWAYS, VEHICLES WERE STRUCK MOST OFTEN WHEN MOVING STRAIGHT, WITH GREATER RELATIVE FREQUENCY AT NIGHT THAN DURING DAYTIME. AT NIGHT, PARKED VEHICLES WERE STRUCK MORE OFTEN THAN TURNING VEHICLES. BETTER MARKING OR SIGNALING FOR TURNING VEHICLES WAS INDICATED ON ROADS AND STREETS, WHILE DRIVER AIDS FOR DETERMINING RELATIVE VELOCITY, CLOSURE, AND DISTANCE ARE NEEDED ON LIMITED-ACCESS HIGHWAYS. THE RECOGNITION OF PARKED VEHICLES AT NIGHT NEEDS TO BE IMPROVE. /AUTHOR/

Research on Safe Distance Model in Avoiding Automobile Rear-end Collision

Abstract: Combining variables such as speed,driver's state,weather state,road state of two trucks going in the same direction together,using the kinematics analytical method,the mathematical model of the safe distance in avoiding automobile rear -end collision is set up. According to the mathematical model of the safe distance,the flow diagram is educed for judge whether the car is safe from the current state or not.

Anti-rear-end collision warning method based on reverse ST-MRF vehicle tracking algorithm

Abstract: The invention discloses an anti-rear-end collision warning method based on a reverse ST-MRF vehicle tracking algorithm, and the method comprises the following steps of firstly using a reverse ST-MRF model for vehicle tracking, optimizing and fusing incomplete segmented parts for vehicle tracking when two vehicles obscure each other, and obtaining traffic information of the preceding vehicle, including the speed, acceleration and acceleration time; converting the world coordinates into pixel coordinates by using a monocular ranging method, and calculating the distance S between the preceding and following vehicles according to the focal length of a fixed focus driving recorder obtained by calibration, the parameters determined in advance, and the position of the pixel point of the precedingvehicle in the image obtained by the reverse ST-MRF model; calculating a longitudinal distance L of the warning according to a theoretical calculation model of the longitudinal safety distance for the warning of the following vehicle obtained based on driver's response characteristics and intuitive characteristics; comparing the longitudinal warning distance L with the distance S between the preceding and following vehicles, and when S is less than L, issuing a warning by the system. The anti-rear-end collision warning method based on the reverse ST-MRF vehicle tracking algorithm provided bythe invention can effectively avoid the occurrence of vehicle rear-end collision accidents, increase the traffic capacity of the road, and ensure the safety of driving.

Vehicle body rear structure of electric vehicle

Abstract: PROBLEM TO BE SOLVED: To provide a vehicle body rear structure of an electric vehicle, capable of alleviating the restriction on the layout of a vehicle body rear part without degrading a rear end collision performanceSOLUTION: In the vehicle body rear structure of an electric vehicle 10 according to the present invention, a suspension member 16 is formed into a C-shape that is open on a vehicle front side in a plan view A pair of right and left inclined members 35, 35 is provided to extend from a cross member 19 on a vehicle rear side to side members 17 so as to intersect with side beams 31 of the suspension member 16, respectively, and is connected to each side beam in a region where the inclined member 35 intersects with the side beam 31 of the suspension member 16 A pair of right and left longitudinal members 36, 36 is provided to extend in a vehicle front-rear direction between a pair of cross members 18 and 19, and a position of a rear end portion of each longitudinal member 36 in a vehicle width direction matches a position of a front end portion of each inclined member 35 in the vehicle width directionSELECTED DRAWING: Figure 1