|
US$329.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GA/T 41-2019: Investigation of trace and physical evidence at the scene of road traffic accident
Status: Valid GA/T 41: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GA/T 41-2019 | English | 329 |
Add to Cart
|
3 days [Need to translate]
|
Investigation of trace and physical evidence at the scene of road traffic accident
| Valid |
GA/T 41-2019
|
| GA 41-2014 | English | 439 |
Add to Cart
|
3 days [Need to translate]
|
Investigation on trace and physical evidence or road traffic accident
| Obsolete |
GA 41-2014
|
| GA 41-2005 | English | 399 |
Add to Cart
|
3 days [Need to translate]
|
The investigation of the trace and physical evidence at the road traffic accident scene
| Obsolete |
GA 41-2005
|
| GA 41-1992 | English | RFQ |
ASK
|
3 days [Need to translate]
|
(Investigation on Trace Materials of Road Traffic Accidents)
| Obsolete |
GA 41-1992
|
PDF similar to GA/T 41-2019
Basic data | Standard ID | GA/T 41-2019 (GA/T41-2019) | | Description (Translated English) | Investigation of trace and physical evidence at the scene of road traffic accident | | Sector / Industry | Public Security (Police) Industry Standard (Recommended) | | Classification of Chinese Standard | R81 | | Classification of International Standard | 43.020 | | Word Count Estimation | 14,155 | | Date of Issue | 2019-06-03 | | Date of Implementation | 2019-06-03 | | Issuing agency(ies) | Ministry of Public Security | GA/T 41-2019: Investigation of trace and physical evidence at the scene of road traffic accident
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Investigation of trace and physical evidence at the scene of road traffic accident
ICS 43.020
R 81
GA
People's Republic of China Public Safety Industry Standard
Replaces GA 41-2014
Physical evidence investigation of road traffic accident scene
Investigation of trace and physical evidence
at the scene of road traffic accident
Published by the Ministry of Public Security of the People's Republic of China
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GA 41-2014 "Examination of physical evidence of road traffic accidents". Compared to GA 41-2014, except for editorial changes
The main technical changes are as follows.
--Modified the standard name (see Standard Name, Standard Name of the.2014 edition);
-Revised the scope of application of the standard (see Chapter 1, Chapter 1 of the.2014 edition);
-Revised normative references (see Chapter 2, Chapter 2 of the.2014 edition);
-Modified the traces of road traffic accidents, ground traces, car traces, human traces, other traces, and physical evidence of road traffic accidents.
Definitions (see 3.1, 3.1.1, 3.1.2, 3.1.3, 3.1.4, 3.2,.2014 version 3.1, 3.1.1, 3.1.2, 3.1.3,
3.1.4, 3.2);
-Added terms and definitions for physical evidence investigation of road traffic accident scenes (see 3.3);
-Added principles for survey work (see 4.1);
-Revised the qualification requirements for survey personnel (see 4.2, 4.1 of the.2014 edition);
-Removed general requirements for survey equipment (see 4.2 in the.2014 edition);
-Added general requirements for survey focus and sequence (see 4.3);
-Revised the general requirements for survey records (see 4.4, 4.6, 4.3 of the.2014 edition);
-Revised the general requirements for supplementary surveys after field changes (see 4.5, 4.4 of the.2014 edition);
-Added general requirements for physical evidence investigation of human traces (see 4.7);
-Added general requirements for road surveys (see 4.8);
-Added general requirements for autopsy (see 4.14);
-Revised the category and content of the survey equipment (see Chapter 5, Chapter 5 of the.2014 edition);
-The survey content of ground trace physical evidence has been modified (see 6.1,.2014 version 6.1);
-The inspection content of the car body traces and physical evidence has been modified (see 6.2 in.2014, 6.2);
-Revised the content of the physical evidence of human traces (see 6.3, 6.3 of the.2014 edition);
-The survey content of other traces of physical evidence has been modified (see 6.4, 6.4 of the.2014 edition);
-Revised the method of finding evidence of traces (see 7.1,.2014 version 7.1);
-Modified the method of fixing trace evidence (see 7.2, 7.2 and 7.4 of.2014 edition);
-Revised the method of extracting trace evidence (see 7.3, 7.5 of the.2014 edition);
-Modified the method of evidence preservation of traces (see 7.4,.2014 version 7.3).
This standard is proposed by the Traffic Management Bureau of the Ministry of Public Security.
This standard is under the jurisdiction of the National Road Traffic Management Standardization Technical Committee (SAC/TC576).
This standard is drafted by. Institute of Transportation Management Science, Ministry of Public Security.
Participating in the drafting of this standard. Traffic Police Corps of Shanghai Public Security Bureau, Traffic Police Corps of Shanxi Public Security Department, Xi'an Public Security Bureau
Through the police detachment.
The main drafters of this standard. Gong Biao, Zhang Aihong, Yu Chunjun, Gao Yan, Li Zhe, Zhao Dong, Hou Xinyi, Li Pingfan, Ding Zhenglin, Ren Hao,
Chu Wanli, Li Xiaobo, Chen Ming, Zhang Jie.
The previous versions of the standards replaced by this standard are.
-GA 41-1992, GA 41-2005, GA 41-2014.
Physical evidence investigation of road traffic accident scene
1 Scope
This standard specifies the site traces of road traffic accidents, general requirements for physical evidence surveys, survey equipment and tools, survey contents and survey methods.
law.
This standard applies to road traffic of public security organs or professional and technical personnel organized by traffic management departments of public security organs.
Investigation of accident scene traces and physical evidence.
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this document.
For undated references, the latest version (including all amendments) applies to this document.
GA/T 49 Road Traffic Accident Scene Mapping
GA/T 50 Road Traffic Accident Investigation Photograph
GA/T 169 Extraction, Preservation and Inspection of Forensic Materials
GA/T 268 Postmortem examination of road traffic accidents
GA/T 944 Road traffic accident motor vehicle driver identification investigation and evidence collection rules
GA/T 945 General Technical Requirements for Road Traffic Accident Site Investigation Equipment
GA/T 1556 Technical specifications for human blood collection in road traffic law enforcement
3 terms and definitions
The following terms and definitions apply to this document.
3.1
Trace of road traffic accident
The marks or imprints on objects and human bodies that can prove the facts of road traffic accidents mainly include ground marks, car body marks,
Human traces and other traces.
3.1.1
Trace on the road surface
Traces formed on the ground by vehicles, human bodies, or other related objects in contact with the ground, including rolling, embossing, dragging, and sliding
India, frustration, etc.
3.1.2
Trace on the vehicle
The traces formed on the vehicle body by the vehicle in contact with other objects or the human body mainly include deformation, damage, surface material increase or decrease, or
Separation of parts as a whole.
3.1.3
Trace on the human body
Human body contact with other objects or human body, marks, scars on clothing, body surface, etc.
3.1.4
Other trace
Traces formed on the surface of trees, road traffic facilities, buildings, livestock, and other items.
3.2
Physical evidence of road traffic accident
An article or substance that can prove the facts of a road accident. Including attachments, scatterings, relics, throws, etc.
3.3
Investigation of trace and physical evidence at the scene
of road traffic accident
Investigators find, fix, extract, and maintain road accidents, vehicles, people, and road environments that are left behind and related to the accident
Traces, physical evidence, and activities that provide scientific evidence for case investigation, process reproduction, cause analysis, and liability determination.
4 General requirements
4.1 The investigation shall follow the principles of legality, safety, timely, objective, standardized, comprehensive and scientific.
4.2 The investigation shall be carried out by a professional and technical person organized by a traffic police or traffic management department of a public security organ who is qualified to handle road traffic accidents
The surveyor shall assume that the surveyor shall possess the professional knowledge and professional skills of site survey.
4.3 During the survey, the focus and sequence of the survey shall be determined according to the types and characteristics of road traffic accidents and abnormal phenomena at the contact sites.
4.4 Mapping, photography, video, audio recording, transcript, 3D scanning and other methods shall be adopted in the survey to trace the road traffic accidents found during the survey.
(Hereinafter referred to as traces), location, distribution, type, quantity, shape, size, etc. of physical evidence of road traffic accidents (hereinafter referred to as physical evidence)
Carry out fixation, extraction, and record in the road traffic accident scene investigation record.
4.5 Where it is necessary to move the accident vehicle, human body or related objects in the process of rescuing the wounded or on-site rescue, marking, photography and video shall be used
And other methods fixed. After the vehicle moves, the site traces and physical evidence shall be supplemented for investigation.
4.6 When surveying the car body traces and physical evidence, the brand, model, color, number of approved load, approved load mass, number plate, and vehicle
Frame number, engine number, motor number, modification, driving mode, driving mode, etc.
4.7 When investigating human traces and physical evidence, the original location, gender, height, corpse length, body type, clothing name,
Color and order of wearing. The survey should follow the order of dressing first and then body surface.
4.8 When surveying roads, the types of intersections or road sections, lane settings, road gradients, curve radii, pavement properties and pavement subsidence,
Potholes, bumps, and other conditions, traffic signs, traffic markings, traffic lights, street lights and other facilities, as well as blocked and defaced conditions, traffic lights,
The working status of street lights and other facilities, and the installation of safety protection facilities such as guardrails, warning posts, collision pier, and isolation belts.
4.9 The road traffic accident escaping accident site shall extract all traces and physical evidence left at the site that may be related to the accident.
4.10 There are monitoring equipment around the scene of the accident, the driving vehicle is equipped with a driving recorder or on-board event data recorder, monitoring equipment, etc.
Extract in time. If the vehicle passing the scene of the accident is equipped with a video driving recorder, relevant information should be extracted.
4.11 The on-site drawing shall be in accordance with GA/T 49.
4.12 The on-site survey photos comply with GA/T 50 regulations accordingly.
4.13 The investigation, extraction and preservation of forensic medical evidence shall comply with GA/T 169 regulations.
4.14 An autopsy shall comply with GA/T 268.
5 Survey equipment and tools
The following equipment and tools should be provided during the survey.
a) Discover extraction equipment and tools. In addition to complying with GA/T 945 regulations, it should also be equipped with gypsum liquid, paraffin, printed film, electrostatic tracker,
Dust mark fixative, medicine spoon, fingerprint extraction tool (integrated fingerprint brush, magnetic pen and ear ball, fingerprint adhesive paper and stabilizer),
Refers to palm print visualization reagents or tools, luminol reagent, printing ink, infrared light source, ultraviolet light source, etc .;
b) Survey and testing equipment. Should comply with GA/T 945 regulations;
c) Survey lighting equipment. Should comply with GA/T 945 regulations;
d) other equipment. Should be equipped with law enforcement recorders.
6 Survey contents
6.1 Ground Evidence
6.1.1 Ground marks
6.1.1.1 Ground traces shall be surveyed for the following.
a) the type, shape, direction, length, width, and attachments of the ground tire marks;
b) the distance between the tire tracks on both sides of the escape vehicle and the distance between the front and rear tire track stops;
c) The vertical distance of the segmented points of rolling, embossing, dragging, and side-sliding relative to the edge of the road surface, the angle between the trace and the centerline of the road, the trace
The amount of slip, direction of rotation, and degree of rotation; position of sudden change points; chord length and chord height of arc marks; discontinuity marks caused by tire runout
Track and distance
d) The distribution, length, width, depth, and traces of traces of car bodies, human bodies, livestock, and other objects left on the ground
The position of the center or the starting and ending points and the abrupt points.
6.1.1.2 See Appendix A for typical types of ground traces.
6.1.2 Ground physical evidence
The ground physical evidence should investigate the following.
a) The type, shape, color, and location of ground attachments, scattered objects, spills, spills, bloodstains, biological tissues, etc.
System and distribution
b) the starting position, landing direction and end position of attachments, scattered objects, relics, and scattered objects;
c) Surface traces and fracture forms of falling parts and fragments.
6.2 Physical evidence of body traces
The traces and physical evidence of the vehicle body shall be investigated as follows.
a) The location of the various traces on the vehicle body and their length, width, and depression depth; the height of the upper and lower edges of the traces from the ground, the traces
The distance between the track and one side of the car body;
b) Damage, breakage and deformation of vehicle components;
c) the first contact position and direction of force between the vehicle and other vehicles, human bodies, livestock, objects, and the corresponding contact position of the other party;
d) When a road traffic accident involves a vehicle light signal device, the vehicle's light bulb or filament and its fragments, component installation, and wire connection conditions;
e) The types, shapes, colors, and classifications of attachments such as fibers, hair, blood stains, biological tissues, livestock, and paint chips left on the car body
布 位置 ； Cloth location;
f) Attachment and remains on the steering wheel, shift lever, door handles inside and outside the cab, around the driver's seat, airbags, and pedals.
The type, shape, color and location of remnants;
g) If the driver of the vehicle needs to be identified, the steering wheel, gearshift lever, cab door handles, around the driver's seat, airbags and feet should be extracted.
Hand, foot traces, and biological samples on pedals, etc. For specific methods, see GA/T 944;
h) Types, shapes, colors, and locations of other vehicle attachments related to road traffic accidents.
6.3 Physical evidence of human traces
Human traces and physical evidence shall be investigated as follows.
a) Traces of damage such as hanging, tearing, slitting, and tripping on clothes, traces of attachments such as paint, oil, and soles;
b) the position, shape, characteristics of the marks on clothing, and the direction of the force that caused the marks;
c) characteristic injuries related to traffic accident injuries;
d) the location, type, shape and size of the surface injury, and the direction of the force causing the injury; the distance from the heel to the heel, the injury
Attachments
e) bloodstains, interstitial fluid, hair, attachments on the body surface of the injured and dead persons;
f) The type, shape, color, and location of attachments to the human body, and evidence of ingestion of alcohol and drugs related to the human body.
6.4 Other evidence
Other traces and physical evidence shall be investigated as follows.
a) The length, width, depth, and height of the marks on the fixed objects such as trees, road traffic facilities, buildings, etc.
Trace body
b) the type, color, size and traces of the animals.
7 Survey methods
7.1 Trace evidence discovery
Traces and physical evidence discovery methods include.
a) Observe the scene of road traffic accidents, and access the ground, accident vehicles, casualties and other related objects at the scene of road traffic accidents.
Touch the part to look for suspicious objects; find the ground, car body, human body and other traces of evidence left on the scene;
b) Use multi-band light source, infrared light source, ultraviolet light source, portable electron microscope and other equipment and reagents to observe and find traces
certificate;
c) Investigate and determine the marks and bearing bodies of the corresponding traces, and the contact points between the marking bodies and the bearing bodies. For multiple consecutive occurrences
The contact should be analyzed to determine whether it was the result of this accident, and to find the specific parts of the tracing body and the supporting body for the first time;
d) When traces and physical evidence are covered by dust, scattered objects and other objects, substances, without prejudice to other project investigations, photographs,
After the evidence is fixed on the video, the cover is removed and then surveyed.
7.2 Traces of physical evidence
7.2.1 Before the traces and physical evidence are extracted, they shall be fixed by means of photography, video, drawing, writing and measurement. It should be shaped before extraction
Status, quantity, color, location, direction, etc. are numbered separately.
7.2.2 For flat marks, you can use tools such as adsorption film, overprint film, and adhesive tape to attach to the surface of the marks for fixing; for three-dimensional marks
Traces can be poured into the traces using gypsum solution, paraffin solution, etc., and the replica is taken out after solidification.
7.2.3 The measurement of traces and physical evidence shall meet the following requirements.
a) The location, length, width, height and direction of the identified traffic accident traces and physical evidence shall be measured and recorded;
b) intermittent traces caused by tire runout shall be measured as continuous traces;
c) Measure and record the shape and amount of deformation (length, width, height or depth) of the vehicle's collision damage;
d) Measurement error. when the measurement target length is less than 0.5m, the maximum error must not exceed 0.005m; the measurement target length is 0.5m to 10m
The maximum error must not exceed 1%; when the measurement target length is greater than 10m, the maximum error must not exceed 0.1m.
7.3 Extraction of trace evidence
7.3.1 General requirements
The extraction of traces and physical evidence shall be well protected and recorded. The requirements are as follows.
a) Confirmation or suspected traces and physical evidence shall be extracted in time without destroying the extract;
b) During the process of exploration and extraction of physical evidence, the physical evidence should be prevented from being contaminated. When marking is required, use chalk or crayons
It shall be marked near the evidence and shall not be marked on the physical evidence. The tools, packaging, containers, etc. used for extracting the physical evidence must be clean.
When extracting physical evidence from different parts, wipe the tool clean each time. Extract oils, bloodstains, biological tissues, etc.
Special physical evidence, the same tool must not be reused, and direct physical contact with physical evidence is not allowed;
c) Solid objects should be packaged separately. For separated or detached objects, care should be taken to ensure that their edges are not damaged during packaging.
Quality (such as blood stains, gasoline, etc.), packaging should be strictly prevent pollution or mixed with each other;
d) For the extract, indicate the name, extractor, witness, extraction time, place, location, weather, extraction method, etc.
The entire process of the extraction process should be videotaped;
e) Traces that cannot be extracted in time on clothing, such as wheel pattern traces, etc., should be extracted along with the clothing, and the traces should be prevented from being damaged.
7.3.2 Direct extraction
The method of directly extracting traces and physical evidence is as follows.
a) Do not touch the traces and physical evidence directly with your hand when extracting; solid matter adhered to the surface of the car body or other large objects can be removed
According to the nature of the material, extract by blade peeling, cotton swab suction, tape sticking, tweezers clamping, scissors cutting and other methods. when necessary,
The evidence can be extracted together with some carriers by cutting, digging, sawing, etc .;
b) Multi-layered physical evidence (such as paints and coatings) should ensure the integrity of the hierarchical structure, multi-component mixed physical evidence (such as fabrics) or not
Uniform physical evidence (such as oil) should be extracted in different parts;
c) When extracting human blood, it should comply with GA/T 1556.
7.3.3 Indirect extraction
For traces and physical evidence that cannot be directly extracted, the method of indirect extraction is as follows.
a) Extraction by photography or video;
b) Traces and physical evidence of layered tires left on smooth roads can be extracted by electrostatic adsorption;
c) The three-dimensional marks left on the road surface, such as the footprints on the dirt road surface, the tire pattern marks, etc., can be extracted by the plaster infusion method;
Can also use 3D scanning for fixed extraction;
d) For traces that have a certain elasticity and are not easy to break and break the surface of the object, you can use a method of adding a certain amount of peroxide to silicone rubber
Solidified extraction
e) For the large area traces on the surface of vehicles or objects, they can be extracted with hard plastic;
f) For handprints, powder, 502 gum, ninhydrin, etc. can be used for photographic extraction after development;
g) A small amount of substance adhered to the surface of small articles and easily decomposed vehicle parts, such as cellulose acetate film (AC paper), etc.
extract;
h) Liquid substances such as blood and grease can be wiped off with filter paper, gauze or absorbent cotton.
7.4 Trace evidence security
The operational requirements for the preservation of traces and physical evidence are as follows.
a) For traces and physical evidence that cannot be extracted immediately, they should be protected with cardboard, rainproof cloth, transparent tape, etc. after fixing;
b) Small physical evidence, solid physical evidence should be sealed with material evidence bags, and liquid physical evidence should be sealed with plastic tubes, glass bottles, etc .;
If the physical evidence with a large volume cannot be completely sealed, it should be sealed with a local package such as a plastic film;
Smaller containers such as glass petri dishes and test tubes with stoppers are sealed and then placed in larger physical evidence bags;
c) The extracted isolate should protect the fracture shape;
d) The extracted clothing should be stored in a material evidence box with a ventilation function, and those with blood stains and liquid substances should be dried in the shade before being stored;
e) The folding of physical evidence should be avoided as far as possible, and those that can be packed and stored should be folded. The traces and physical evidence should not be contacted by other objects;
f) Evidence of volatile materials that cannot be sent immediately for inspection should be sealed with clean and suitable glass bottles, plastic bottles or plastic bags, and stored at low temperature
g) The physical evidence name, source, extraction location, extraction person, time, storage environment requirements and other information shall be marked on the physical evidence outer packaging.
Identification, or put a label on the appropriate part of the physical evidence;
h) The entire vehicle of the accident should be parked in a guarded parking lot, and measures should be taken to prevent rain and dust.
Appendix A
(Informative appendix)
Typical ground trace types
A.1 Rolling
Rolling refers to the footprint left on the ground when the vehicle tire makes pure rolling motion relative to the ground, and the brake roll will also be left at the beginning of braking.
Seal. Rolling can clearly reflect the characteristics of the tire tread pattern, pattern combination, tread wear, mechanical damage, and driving direction. See picture
A.1.
Figure A.1
A.2 Embossing
Embossing means that the tire of the vehicle is left on the ground during the compound rolling and sliding movements relative to the ground in the direction of travel due to braking force
Blot. The embossing shows the pattern with thickened structure and extended distortion. Embossing is the front part of brake dragging, which is connected with the black belt of dragging.
The effect of braking force, the shape of the impression generally has longitudinal slip, and the pattern structure is elongated and deformed. See Figure A.2.
Figure A.2
A.3 Printing
Embossing
Print
Smearing refers to the marks left on the ground when the tire of the vehicle is subjected to a braking force in the sliding direction relative to the ground in the direction of travel. Print
Features are band-shaped, no tread pattern is displayed, and the width is basically the same as the tread width. The direction of the smear is basically the same as the direction of the vehicle, and sometimes
It will deviate due to the effect of braking deviation or applied torque. See Figure A.3.
Figure A.3
A.4 Side slip
Vehicle tires are subject to braki...
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GA/T 41-2019_English be delivered?Answer: Upon your order, we will start to translate GA/T 41-2019_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GA/T 41-2019_English with my colleagues?Answer: Yes. The purchased PDF of GA/T 41-2019_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay. Question 5: Should I purchase the latest version GA/T 41-2019?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GA/T 41-2019 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.
|