What are the requirements for traffic accident scene photos?

What are the requirements for traffic accident scene photos? The traffic accident scene photo specification requires the photos to be clear; Reflect the geographical location of the site and the relationship between the site and the surrounding environment; When taking local photos of the site, it is advisable to take multi-directional photos around the important parts of the site; Focus on the target to focus on shooting. The scene photography of road traffic accidents can be divided into azimuth photography, overview photography, local photography, element photography, detail photography and contrast photography. Shooting the scene of a road traffic accident is an integral part of on-site investigation. It is a recording activity carried out by the traffic police department on the scene of traffic accidents, vehicles, human bodies, traces and physical evidence. Photography is an important means to fix and record evidence materials related to traffic accidents. I. Contents, Requirements and Methods of Azimuth Photography refers to specialized photography that reflects the geographical position of the scene of road traffic accidents and the relationship between the scene and the surrounding environment. 1. The shooting contents of azimuth photography include: a) the geographical location of the site and the relationship between the site and the surrounding environment; B) Fixed signs of site geographical location, including signs, milestones, lampposts, bridges, hospitals, schools, shops and other landmark buildings; C) Surrounding environment of the site, including streets, tunnels, bridges, mountains, cliffs, ditches, culverts, rivers, vegetation, etc. D) Traffic facilities around the site, including road traffic lights, traffic signs, traffic markings, traffic monitoring equipment, etc. E) Morphological characteristics of the roads on site, including intersections, road sections, number of lanes, sight distance, slope, curvature, etc. 2. Shooting requirements for azimuth photography a) When shooting, the framing range should reflect the relationship between the scene and geographical location markers, surrounding environment, surrounding traffic facilities and road morphological characteristics. B) The scene is located in a certain road section, so it should be shot in the opposite direction of the road direction, and the viewing angle should cover all the lanes on the scene as far as possible, and reflect whether there are bends or ramps. C) The site is located at the intersection, and the site and surrounding environment should be photographed from three or more different directions along the road direction, and the viewing angle should cover the whole intersection. 3. Azimuth photography should adopt the following methods: a) The camera can be set on the center line (axis) of the road when it is located on a certain road section on the spot, and the straight continuous shooting method can be used; B) The scene is located at an intersection, and multi-directional shooting or rotating continuous shooting method can be adopted; C) Standard lens should be used for shooting, and the aperture should not be greater than F8; D) If conditions permit, you can set the plane in a higher place to shoot at high altitude. Two. Overview of photography content, requirements and methods Photography refers to specialized photography that reflects the macro relationship between the overall scene of road traffic accidents and the elements of road traffic accidents. 1. Overview The contents of photography are as follows: a) The whole scene of road traffic accidents; B) factors of on-site road traffic accidents. 2. Overview photography requires that a) the visual angle should cover all the site elements, try to avoid mutual occlusion between the site elements, and reflect the macro position relationship between the road traffic accident elements. B) If the scene is located in a certain road section, it should be shot in the opposite direction in combination with the road direction or vehicle trajectory, and the viewing angle covers the lane where the scene is located. C) If the scene is located at an intersection, it should be shot from three or more different directions along the road direction to cover the intersection area. 3. Panoramic photography should adopt the following methods: a) The scene is located on the road section, and the opposite shooting method can be adopted; B) The scene is located at the intersection and can be shot from multiple directions; C) The scene has a wide range, and it can be shot in a straight line from the opposite direction. Three. The shooting content, requirements and methods of local photography: special photography that reflects the positional relationship of road traffic accident elements within the scope of some road traffic accidents. 1. The contents of local photography include: a) the important parts of the traffic accident scene; B) factors of on-site road traffic accidents. 2. The shooting requirements of local photography a) should be able to reflect the relationship between the elements of road traffic accidents. B) Choose an appropriate shooting angle to avoid being blocked by the subject. C) If there is a ground trace mutation point, the relationship between the road trace mutation point and the road traffic accident elements should be photographed. D) When shooting the relationship between the tire tracks on the road surface and the vehicle position, the camera should be set at the starting point of the tracks, and the viewing angle should cover the space area between the starting point of the tracks and the vehicle position. Photos should try to reflect the starting point, ending point, mutation point and direction of the trajectory. 3. Local photography should adopt the following methods: When taking local photos of the site, it is appropriate to take multi-directional photography around the important parts of the site. Four. The shooting content, requirements and methods of element photography: specialized photography that reflects the appearance and state of elements in road traffic accidents. 1. The shooting contents of elemental photography are as follows: the shooting contents of human body (corpse) are as follows: a) the position of human body (corpse) inside or outside the car; B) posture of human body (corpse); C) Full picture and head photo of human body (corpse); D) clothing of human body (corpse). The shooting contents of the vehicle include: a) the position and state of the vehicle at the scene; B) vehicle appearance characteristics. The shooting contents of road facilities include: a) on-site traffic signs and traffic markings; B) Traffic facilities that were hit at the scene. The shooting contents of the on-site ground traces are as follows: a) Ground tire traces, including drag printing, sideslip printing, roll printing, embossing, etc. B) Traces of human body on the ground; C) Other marks on the ground, including marks formed by the body, vehicle parts or articles on the ground. The shooting contents of scattered objects and blood are as follows: a) scattered objects, including vehicle parts and articles; B) blood and human tissues. Other physical evidence related to the accident includes animals, trees and houses that were hit. 2. The shooting requirements of elemental photography are as follows: a) The position of human body (corpse) should be marked before shooting; B) If there are more than two deaths, the bodies should be numbered first and then photographed; C) The site position, posture and clothing of the person (corpse) should be reflected; D) It should reflect the positional relationship of injuries, traces, blood stains and attachments on the body surface and clothing surface of the person (corpse). Requirements for vehicle shooting: a) reflect the position and state of the vehicle; B) It shall reflect the appearance of the vehicle, including the body, tires, number plates, lamps and accessories, etc. C) should reflect the damage and deformation of the vehicle. The requirements for photographing road facilities are: a) road traffic signs, traffic lights and traffic markings should reflect the whole scene; B) The overall state and damaged parts of hit facilities shall be reflected. The requirements for shooting ground traces are: a) to reflect the starting point, end point, mutation point and trend of traces; B) When the contrast between the trace and the background is small, the outline of the trace can be marked with chalk without polluting the trace; C) The photographed element is not less than 2/3 of the picture. The shooting requirements of scattered objects and blood should reflect the position, direction and morphological characteristics of scattered objects and blood. 3. Element photography should adopt the following methods: a) When taking a full-body photo of a corpse, the camera should shoot vertically on the side of the corpse, and the camera lens should be kept basically perpendicular to the plane where the corpse is located, so that the human body (corpse) is not less than 2/3 of the picture; B) When taking photos of the face, take photos with the nose tip as the center and the camera perpendicular to the face, and record facial features, attachments and scars; C) When shooting multi-wheeled vehicles, one vehicle should be shot at the same height and at the same distance along the diagonally opposite direction of the vehicle; D) When shooting a two-wheeled vehicle, one should be taken at the center position perpendicular to both sides of the vehicle body; E) If the car body is damaged or deformed, you can choose a position that can reflect the damage and deformation of the car. F) When shooting a large area of traces or scattered objects, you can stand on the starting point side of the traces or scattered objects with your camera, and keep the camera shooting horizontally so that the captured elements are not less than 2/3 of the picture; G) When shooting traces and blood in a small area, the center vertical shooting method should be adopted. V. Contents, requirements and methods of detail photography: specialized photography reflecting local details, physical evidence and surface traces of road traffic accidents. 1. The shooting contents of detail photography are as follows: the shooting contents of human body (corpse) traces are as follows: a) the surface of clothes is damaged, scratched, tire patterns and other traces; B) Grease, dirt, paint, rubber and other attachments on clothes or body surfaces; C) body surface scar. The shooting contents of vehicle traces and parts are as follows: a) the specific location and shape of damage, deformation and loss; B) Location and form of scratches; C) Location, shape and color of attachments, including the location and shape of blood, hair, human tissues, fibers, fingerprints, palm prints and shoe prints; D) Tire tread pattern and tire damage mark; E) Articles in the car, including shoes and bags; F) Status of interior parts, including steering wheel, instrument panel, light and wiper switch, gear position, parking brake, seat belt, airbag, vehicle-mounted satellite positioning device and driving recorder, etc. The shooting contents of ground traces include: a) the starting point, mutation point, stopping point, pattern shape and size of vehicle tire traces; B) The starting point, mutation point, stopping point, pattern shape and size of the trace left by the car body on the ground; C) The starting point, mutation point, end point, shape and size of the trace left by the human body on the ground; D) Starting point, mutation point, ending point, shape and size of other marks on the ground; E) the form and size of traces attached to scattered objects; F) shape and size of blood. 2. Shooting requirements for detail photography a) Scale should be attached, and the selection of scale should meet the requirements of 3.4 and 3.5 in GB/T 23865-2009. B) The shapes, colors, textures and proportions of traces, damages and trace substances shall be clearly reflected. C) The subject should be no less than 2/3 of the picture. D) When shooting in low light, you can use an auxiliary light source. 3. The following methods should be adopted in detail photography: scale photography should be adopted in detail photography, keeping the lens perpendicular to the trace surface and making the scale parallel to the frame on one side of the viewfinder; When a single picture can't reflect the integrity, the linear continuous shooting method can be used. When shooting, two adjacent photos should have overlapping parts, and the overlapping parts should avoid the main trace damage position. The photography content, requirements and methods of comparative photography of intransitive verbs: special photography that reflects the contact position and contact mode between the marker maker and the marker carrier. 1. The shooting contents of comparative photography are as follows: the comparative photography should shoot the sign carrier and the sign maker determined through investigation, and the shooting contents are as follows: a) the contact position and contact mode between vehicles; B) Contact position and contact mode of vehicles and fixed objects (trees, telephone poles, guardrails, etc.). ); C) Comparison between vehicle tire pattern and ground tire pattern; D) Comparison between car body marks and ground marks; E) Comparison of human body and clothing marks with body marks and ground marks; F) Comparison of whole separation markers. 2. Photographic requirements for comparative photography a) The corresponding relationship of marks should be confirmed, and the contact position and contact mode of the mark carrier and the mark maker should be analyzed and judged. B) The contact parts of the mark carrier and the mark maker shall be photographed in detail perpendicular to the trace plane. C) If conditions permit, the mark maker and the mark carrier should be placed in contact, and photos of their relationship should be taken. To sum up, most of the traffic accident scene photos can reflect the cause and result of the accident, so most of them were taken by special traffic police personnel. Therefore, when encountering a major traffic accident, call the police in time, don't walk around at will, and don't touch the accident vehicle. This will lead to the destruction of the environment at the scene of the accident, and it is more troublesome for the traffic police to find evidence later.