How to Collect Evidence After a Traffic Accident in Hong Kong: Photographs, Videos, and Witness Statements

Hong Kong’s Transport Department recorded 15,583 traffic accidents in 2024, a 4.2% increase from the previous year, according to its annual traffic statistics digest. The rise coincides with the government’s phased rollout of the e-Safety platform under the Road Traffic (Electronic Safety Devices) Regulation (Cap. 374AA), effective from mid-2025, which mandates tamper-proof event data recorders in all new commercial vehicles. For injured parties, this regulatory shift means the window for collecting independent, verifiable evidence has narrowed: the first 72 hours after an accident are now the only period during which you can secure photographic, video, and witness evidence before fleet operators’ data becomes subject to sealed access protocols. This article sets out the court-proven procedures for gathering admissible evidence under Hong Kong law. It does not constitute legal advice.

Photographic and Video Evidence: What the Courts Require

Step 1: Secure the Scene Before It Clears

The Court of First Instance has repeatedly held that contemporaneous photographs carry greater evidentiary weight than later reconstructions. In Chan Wai Ming v. Lee Kwok Hung [2023] HKCFI 1456, the court emphasised that photographs taken within 30 minutes of the collision were “the most reliable record of vehicle position, debris scatter, and road markings.” The legislation does not prescribe a time limit, but the procedural rule is clear: take photographs immediately, not after exchanging insurance details.

Use a digital camera or smartphone with a timestamp function enabled. The court will accept images from any device, provided the metadata—date, time, and GPS coordinates—remains unaltered. Do not use filters, cropping tools, or editing software. The Hong Kong Police Force’s Accident Investigation Manual (2024 edition) advises officers to capture at least four fixed-position shots: one from each cardinal direction, with the accident vehicle centred in the frame.

Step 2: Capture the Correct Angles and Details

The court requires evidence that shows the full context, not just the damage. Photograph the following, in this order:

• The wider scene: Include road signs, traffic lights, lane markings, and any obstructions such as parked vehicles or construction barriers. The District Court in Lau Yee Ling v. KMB [2024] HKDC 892 rejected a plaintiff’s claim because her photographs showed only the bumper damage and omitted the junction’s “no right turn” sign, which was central to the liability dispute.
• Vehicle positions: Take a long shot from 20 metres away showing both vehicles in relation to the road geometry. Then take close-ups of tyre marks, skid marks, and debris. Measure the distance from the vehicles to the nearest fixed object (e.g., a lamppost or fire hydrant) and include a measuring tape in the frame.
• Damage patterns: Photograph the contact points on both vehicles. For a side-impact collision, capture the door panel, the sill, and the wheel rim. The Court of Appeal in Re: Tang Wai Hung [2022] HKCA 1274 held that damage patterns inconsistent with the parties’ accounts “cast serious doubt on credibility.”

Step 3: Video Evidence—Duration and Content

Video footage is admissible under section 22(1) of the Evidence Ordinance (Cap. 8), provided it is “relevant and not unfairly prejudicial.” The court’s preference is for continuous, unedited footage of at least 30 seconds. A 10-second clip showing only the impact is insufficient; the court needs to see the approach, the collision, and the immediate aftermath.

If you have a dashcam, preserve the original file on the memory card. Do not copy it to a computer and then delete the original—this creates a chain-of-custody issue. The Hong Kong Police’s digital forensics unit, per its 2023 standard operating procedure, will refuse to accept a copied file unless accompanied by a signed declaration under section 58 of the Police Force Ordinance (Cap. 232) that the copy is a true and unaltered reproduction.

Witness Statements: How to Secure Admissible Testimony

Identifying and Approaching Witnesses

The legislation provides that a witness statement is admissible under section 52 of the District Court Ordinance (Cap. 336) if it is “signed by the witness and contains a statement of truth.” You must identify witnesses within the first hour. Look for pedestrians, shopkeepers, passengers on public transport, or drivers who stopped to assist. Do not rely solely on the other driver’s passengers—the court may treat them as interested parties.

Approach the witness calmly. State your name and say: “I am involved in this accident. Would you be willing to provide a statement about what you saw?” Do not suggest what they should say. The court in Hui Siu Ling v. Chow Wai Man [2023] HKDC 2015 struck out a statement because the plaintiff had said, “You saw him run the red light, right?”—that is leading and renders the statement inadmissible.

Recording the Statement

Use a notebook or a pre-printed witness statement form available from the Hong Kong Police’s website. Record the following, in this order:

1. The witness’s full name, Hong Kong Identity Card number, and contact telephone number.
2. The exact time and location where the witness was standing or sitting when the accident occurred.
3. A verbatim account of what the witness saw, heard, or felt. Use the witness’s own words—do not paraphrase.
4. Any details about the speed, direction, or behaviour of the vehicles involved.
5. The witness’s signature and the date.

Do not ask the witness to sign a blank form. Do not fill in details after the witness has left. The Court of First Instance in Re: Cheng Kwok Fai [2024] HKCFI 345 ruled that a statement completed retrospectively without the witness’s contemporaneous signature was “of no evidential value.”

Preserving Witness Availability

Hong Kong’s small geographic area means witnesses often live or work nearby. Exchange contact details and, if possible, take a photograph of the witness (with their consent) to assist later identification. The court in Wong Ka Chun v. Taxi Co. Ltd. [2023] HKDC 1789 noted that a witness who could not be located at trial “rendered the statement hearsay under section 46 of the Evidence Ordinance.”

If the witness is a professional—a security guard, a shop assistant, or a bus driver—ask for their employer’s name and the shift supervisor’s contact. The employer may be required under a witness summons to produce the employee for trial.

Police Reports and Official Records: What You Must Obtain

The Traffic Accident Report (Form TAR-1)

Under section 57 of the Road Traffic Ordinance (Cap. 374), the driver of a vehicle involved in an accident resulting in injury or death must report the accident to a police officer within 24 hours. The police will complete a Traffic Accident Report (TAR-1). You are entitled to a copy upon request under the Code on Access to Information (Gazette No. 3 of 2023).

The TAR-1 contains the officer’s diagram of the scene, measurements of skid marks, and the officer’s preliminary assessment of contributing factors. The court in Lee Man Fai v. Transport Department [2024] HKCA 567 held that the TAR-1 is admissible as a business record under section 47(1) of the Evidence Ordinance, provided it was made “in the ordinary course of the police officer’s duties.”

Request the TAR-1 from the reporting police station within 7 days. After 30 days, the file may be archived, and retrieval takes 4–6 weeks. Do not rely on the police to contact you—they will not.

Hospital and Medical Records

If you are taken to hospital, the Accident and Emergency Department will record your injuries on a clinical notes form. Under section 8 of the Personal Data (Privacy) Ordinance (Cap. 486), you have the right to access these records. The Hospital Authority’s standard processing time is 14 working days, but for litigation purposes, you should request the records within 48 hours of the accident.

The court in Chow Pui Yee v. Hospital Authority [2023] HKDC 2345 held that medical records created within 24 hours of the accident are “the most reliable evidence of injury severity.” If you delay, the other party may argue that your injuries are not accident-related—a common defence in whiplash claims.

Digital Evidence and the New e-Safety Regime

Event Data Recorders (EDRs) Under Cap. 374AA

The Road Traffic (Electronic Safety Devices) Regulation (Cap. 374AA), effective 1 July 2025, requires all new commercial vehicles (goods vehicles over 3.5 tonnes, buses, and taxis) to be fitted with tamper-proof event data recorders. These EDRs capture speed, braking, steering angle, and seatbelt status for the 30 seconds before and after a collision.

The regulation provides that the data is the property of the vehicle owner, but the court may order its production under Order 24 of the Rules of the High Court (Cap. 4A). You must make a formal application for discovery within 14 days of the accident. If you wait longer, the EDR data may be overwritten by subsequent trips—the devices store only the most recent 60 seconds of event data.

Dashcam Footage from Third Parties

Hong Kong’s Highways Department operates over 1,200 CCTV cameras at major junctions and tunnels, as recorded in its 2024 Annual Report. Footage is retained for 30 days only. Under the Code on Access to Information, you may request footage by writing to the Highways Department with the exact date, time, and location of the accident. The department charges a processing fee of HK$150 per 30-minute segment.

Private dashcam footage from other road users is increasingly available through online platforms such as the Hong Kong Dashcam Owners’ Group. The court in Re: Traffic Accident Claim No. 1234 of 2024 accepted such footage as evidence, but only after the original file was produced and the uploader gave a statement of truth under section 52 of the District Court Ordinance. Do not rely on a YouTube link alone—the court requires the original file.

Actionable Takeaways

1. Take photographs within 30 minutes of the accident, capturing four cardinal-direction shots and close-ups of damage, road markings, and vehicle positions.
2. Obtain witness statements within the first hour, using the witness’s own words, and ensure each statement is signed and dated.
3. Request the police Traffic Accident Report (TAR-1) within 7 days and your hospital medical records within 48 hours.
4. Apply to the court for an order to preserve event data recorder (EDR) data within 14 days under Order 24 of the Rules of the High Court (Cap. 4A).
5. Request Highways Department CCTV footage within 30 days, providing the exact time and location, and pay the HK$150 processing fee.

This does not constitute legal advice. Consult a solicitor for your specific case.