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Traffic Light Sequences: How to Gather Evidence for Your Case

Date Published: October 2, 2024

You’ve just been in a collision at a traffic light-controlled intersection. The question on everyone’s mind: Who had the green light? It’s a common scenario where conflicting accounts can leave you feeling frustrated and uncertain about your next steps.

Understanding traffic light sequences is crucial for determining fault in an accident. This guide will help you gather evidence to support your claim, including information about traffic light sequences.


Traffic Lights 101: A Rider's Guide


First, let's learn how traffic lights work. Traffic light systems vary, but understanding the basics can help you assess the situation. We'll cover different traffic light sequences and how they operate.


Basic Signals


  1. Red Light: Stop. This is non-negotiable. Ensure you're behind the stop line.

  2. Yellow (Amber) Light: Prepare to stop. Only proceed if stopping safely is impossible. Avoid sudden braking or accelerating.

  3. Green Light: Go, but always proceed with caution.


Variations of Traffic Light Sequences


  1. Arrows (Turn Signals): Directional indicators for turns.

    1. Red arrow: No turn.

    2. Yellow arrow: Prepare to stop.

    3. Green arrow: Permitted turn.

    4. Flashing yellow arrow: Proceed with caution, yielding to pedestrians.

  2. Pedestrian Signals: Coordinate with vehicle traffic to ensure pedestrian safety.

  3. Bus and Tram Signals: Prioritise public transport in specific lanes.

  4. Bicycle Signals: Indicate when cyclists can proceed.

  5. Emergency Vehicle Preemption: Overrides standard sequences for first responders.

  6. Temporary Traffic Lights: Used at construction sites or special events.

  7. Red Lights at Fire Stations: Require stopping for exiting fire engines.


How Traffic Lights Work


Traffic signals are controlled by sophisticated systems that respond to traffic flow.


  • Sensors: Detect vehicles and pedestrians to adjust light timings.

  • Coordination: Ensures smooth traffic flow across multiple intersections.

  • Displays: The duration of each light phase varies based on traffic and road conditions.


The Role of Traffic Light Timing


The timing of traffic lights—how long each colour stays on—is crucial for road safety. These times are carefully calculated to prevent accidents.


In Queensland, the Department of Transport and Main Roads (TMR) determines traffic light timings. For example, yellow lights must be long enough for vehicles to stop safely but not so long that it encourages speeding. 


Factors like road slope and speed limits affect this time. Generally, there's about one second of yellow light for every 13 kilometres per hour of the speed limit. The entire traffic light cycle (red to green to yellow, then back to red) usually takes 50 to 150 seconds but can change based on traffic and road conditions.


Traffic Light Sequences and Motorcycle Accidents


Now that you understand traffic light basics, let's explore how these sequences can contribute to motorcycle accidents.

Imagine this: You've been involved in a collision at a traffic light-controlled intersection. You swear you had a green light. The other driver insists they did too.


Who's right?


Typically, there are three possibilities:


  • You had the green light.

  • The other driver had the green light.

  • Both of you had a green light (yes, this can happen due to traffic light malfunctions).


How do you determine the truth?


Eyewitness accounts, surveillance footage, and dashcam recordings can be invaluable. But if these sources are inconclusive, a traffic light sequence report might provide the answer.


What is a Traffic Light Sequence Report?


A traffic light sequence report is a detailed record of a traffic light's behaviour at a specific time.


What Information Does It Provide?


The exact content of a traffic light sequence report depends on factors like:


  • Who controls the traffic lights (e.g., state, local government)

  • The traffic light system's age

  • The type of data recorded

  • How the controlling body generates reports

Potentially, a traffic light sequence report can reveal:


  • The traffic light's programmed sequence: When each light should turn green, yellow, or red.

  • The traffic light's actual behaviour: What the lights were genuinely doing at the time of the accident.

  • Malfunctions or errors: If the traffic lights were not working correctly (e.g., stuck on green).


Obtaining a Traffic Light Sequence Report


If you're involved in an accident, a traffic light sequence report can be crucial to understanding what happened. However, it's essential to approach this process strategically.


When to Request


Request the report as soon as possible after the accident to ensure data availability. If other evidence is inconclusive, a traffic light sequence report may be essential.


Before Requesting a Report


  1. Assess your evidence: Evaluate the information you already have from witnesses, surveillance footage, and your own recollection.

  2. Research report content: Find out what kind of information is included in traffic light sequence reports from the relevant controlling body.

  3. Consider costs: Be aware that there might be fees associated with obtaining the report.


How to Request


  1. Identify the controlling body: Determine if the traffic lights are managed by the Department of Transport and Main Roads or your local council.

  2. Contact the controlling body: Follow their specific procedures for requesting a report (email, form, letter).

  3. Provide necessary details: Include the accident location, date, time, and specific traffic lights of interest.

  4. Understand fees and data availability: Be prepared for potential costs and the possibility of missing data.


Understanding traffic laws and potentially consulting with a lawyer can help protect your rights and build a strong case if necessary.


Protect Your Rights After a Traffic Light Accident: A Step-by-Step Guide


Now that we've explored how traffic light sequences can contribute to accidents, let's focus on practical steps to safeguard your rights.


Step 1: Prioritise Safety


Your safety is paramount. If you or anyone else is injured, call emergency services immediately. Once the situation is stabilised, focus on gathering evidence to support your claim.


Step 2: Secure Critical Evidence


  • Photograph and Video: Capture the accident scene from multiple angles, including vehicle damage, injuries, road conditions, and traffic flow.

  • Witness Statements: Collect contact information and gather witness statements.

  • Traffic Camera Footage: Request footage from nearby surveillance or red-light cameras. Use the QLD Traffic Website to locate cameras by region or name.

  • Police Report: Obtain a copy of the official accident report. This is a critical piece of evidence.

  • Medical Records: Document injuries and treatment. These records are essential for proving the injury extent and treatment costs.


Step 3: Exchange Information


Exchange contact and insurance details with other drivers involved.


Step 4: Request a Traffic Light Sequence Report


This report can provide crucial details about the traffic light's behaviour at the time of the accident.


Step 5: Notify Authorities


Report the accident to the police and obtain a copy of the accident report.


Step 6: Document Medical Care


Seek immediate medical attention for any injuries and keep detailed records of your treatment.


Step 7: Preserve Vehicle Evidence


Avoid vehicle repairs until inspected by your insurance company or legal representative.


Step 8: Utilise Technology


Preserve dashcam footage and consider using accident reporting apps to document the scene and gather witness information.


Legal Considerations and Next Steps


While court may not always be necessary, understanding your legal rights and options is crucial for a smooth resolution.


1. Know Your Rights and Responsibilities


Knowing your rights and obligations under Queensland traffic law is critical. Review your insurance policy, paying close attention to your Compulsory Third Party (CTP) coverage. Remember, there's a time limit for personal injury claims, so act promptly.


2. Consult with a Personal Injury Lawyer


A personal injury lawyer can guide you through the legal process, protect your rights, and fight for the compensation you deserve. Consider consulting experts like traffic engineers or accident reconstructionists to strengthen your case.


3. Prepare for Potential Court Proceedings


Gather and organise all relevant evidence to prepare for potential court proceedings. Practise your testimony and familiarise yourself with Queensland's legal procedures.


Final Word


Traffic lights are more than just signals. They can be crucial evidence in accident cases. Understanding how they work and how to gather evidence about their sequence can significantly impact the outcome of your claim.


By following the steps outlined in this guide, you'll be better equipped to protect your rights and build a strong case. 

Remember, knowledge is power. Arm yourself with information to stay safe on the road and to effectively respond in case of an accident.


Disclaimer: This guide provides general information and is not a substitute for legal advice. While we strive to offer accurate and up-to-date information, laws and regulations can change. For personalised guidance on your specific situation, it's crucial to consult with a motorcycle accident lawyer.


Need help? Our experienced motorcycle law team is ready to assist you. Contact us today for a free consultation.


Frequently Asked Questions


Who has priority when traffic lights are out of order? 

If traffic lights malfunction, treat the intersection as a four-way stop. The first vehicle to arrive at the intersection proceeds first.


Do traffic lights have cameras? 

Some intersections are equipped with red-light cameras to enforce traffic laws and improve safety.


How can I obtain a traffic light sequence report? 

Contact the local transportation department or traffic engineering agency responsible for the intersection.


What should I do if I'm involved in a traffic light accident? 

Prioritise safety, call emergency services, exchange information with other parties involved, gather evidence, and contact your insurance company.


Can I sue if a traffic light malfunction caused an accident? 

The potential for legal action depends on the specific circumstances and local laws. Consulting with a lawyer can provide guidance.


How can I improve my riding skills at intersections? 

Practise defensive riding techniques, be aware of your surroundings, and anticipate potential hazards.


What should I do if I encounter a traffic light malfunction? 

Exercise caution, proceed with extra care, and be prepared to yield to other vehicles.


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