How do dash cams work? And why you should get one

By Polished Piston Team

Affiliate Disclosure: As an Amazon Associate, we earn a commission on qualifying purchases if you purchase a product through a link on our website, at no extra cost to you. Thank you.

I am going to go out on a limb here and assume you know what a dash cam is, or you have seen one before. These compact devices, mounted on the dashboard or windshield of a vehicle, serve the primary function of recording everything that happens while you drive.

Dashcams have surged in popularity over the years, not just as a tech gadget for enthusiasts but as a vital tool for road safety and legal protection. Yeah, legal protection too.

They provide a continuous, unbiased record of events on the road, helping to settle disputes, aid in insurance claims, and even deter criminal behavior. In this article, we will try to explain how dashcams work, and then go ahead to tell you why it should be on your car too. Their role extend beyond simple recording, it plays a significant part in enhancing driver security and accountability.

How do dash cams work

What is a dash cam

A dashcam, short for dashboard camera, is a type of video camera that is mounted inside a vehicle, typically on the dashboard or windshield. Its basic functionality revolves around recording the view through the vehicle’s front windscreen and sometimes rear or other windows. The primary purpose of a dashcam is to capture footage of the surroundings as the vehicle travels, documenting the journey and any incidents that occur on the road.

Types of Dash Cams

Dashcams come in various types, each offering different perspectives and functionalities:

  • Front-facing Dashcams: These are the most common type and are mounted on the front windshield to record the road ahead. They capture a wide view of the street, traffic, and any potential incidents, providing clear evidence in case of accidents or disputes.
  • Rear-facing Dashcams: Installed at the back of the vehicle, these dashcams record the view behind. They are crucial for capturing rear-end collisions and can be particularly useful in understanding the circumstances leading up to an accident.
  • Cabin View Dashcams: Also known as interior dashcams, these are designed to record the inside of the vehicle. They are often used in commercial vehicles like taxis and ride-sharing services to monitor the driver and passengers’ activities for safety and security reasons.

Some dashcams are designed to offer multiple views, combining front-facing and rear-facing or cabin view cameras in a single device. This multi-lens setup provides comprehensive coverage of the vehicle’s surroundings, offering a fuller picture of events as they unfold.

You Might Also like: Why Your Tesla Model Y Deserves More Than Standard Floor Mats: Balancing Function and Fashion

How do dash cams work?

Dashcams record and store video through a process that ensures continuous coverage of a vehicle’s journey, often utilizing a method known as loop recording. This process allows the dashcam to continuously record video on a loop, writing over the oldest files on the storage card when it becomes full. This means that the dashcam can keep recording without the need for manual intervention to clear space, ensuring that all parts of a journey are covered until an incident occurs.

Continuous loop recording works by dividing the video into segments, usually a few minutes long. When the memory card reaches its capacity, the camera automatically deletes the oldest segment and replaces it with new footage. This method ensures that the most recent events are always recorded without the risk of running out of storage space during critical moments.

Some dash cams have a G-sensor feature installed on them. The G-sensor (gravity sensor) in a dashcam is a crucial feature that detects sudden movements or shocks, such as those experienced during a collision. When the G-sensor is triggered, the dashcam automatically marks the current footage for safekeeping, preventing it from being overwritten by the loop recording process. This ensures that vital evidence of an incident is retained and can be retrieved later. The sensitivity of the G-sensor can often be adjusted to prevent it from activating during minor bumps or normal driving conditions, ensuring that only significant events are locked and saved.

A good Dashcam uses a combination of continuous loop recording to manage storage efficiently and G-sensor technology to ensure that important footage is preserved during an incident, making them an invaluable tool for documenting and analyzing on-road events.

Other features of a dash cam and how it works

1. GPS Integration

Modern dashcams are pretty impressive with their tech features, and here’s a quick rundown of what they offer. They often come equipped with GPS integration, which is more than just tracking your route. This feature captures your exact location and speed, storing this data alongside your video footage. It’s like having a digital logbook that adds valuable context to your recordings, especially useful if you need to detail an incident or track your journey.

2. Wi-Fi and Bluetooth connectivity

Then there’s the convenience of Wi-Fi and Bluetooth connectivity. This means you can manage your dashcam’s footage directly from your smartphone or computer, without needing to mess around with removing memory cards. It’s straightforward to use an app to access, download, or even share your videos, and you can adjust settings or update the dashcam’s software wirelessly, making the whole process a breeze.

3. Parking Mode

Parking Mode is another handy feature. It turns your dashcam into a vigilant observer of your parked car, activating to record if it detects any movement or impact around your vehicle. This function requires a continuous power source, but it’s a small price to pay for the peace of mind it offers, capturing any incidents that occur when you’re not around. Some of these dash cams come with built in batteries to power them when the vehicle is not running.

4. Night vision capability

Lastly, the night vision capability in modern dashcams shouldn’t be overlooked. It enhances the camera’s ability to record clear footage in low light conditions, utilizing advanced sensors and infrared lighting. This feature ensures that even during nighttime, your dashcam can provide clear and detailed images, making it reliable 24/7.

Benefits of Using a Dashcam, and why you should get one.

Using a dashcam in your vehicle comes with several significant benefits that enhance both safety and security on the road. I am pretty sure there’s lot more, but I’ll just mention these 3 important ones.

Dash cam records accident

a. Enhanced Road Safety

Dashcams contribute to safer driving environments by providing a clear record of what happens on the road. Knowing that their actions are being recorded can make drivers more conscious of their behavior, leading to more cautious and rule-abiding driving. Additionally, the footage from dashcams can be used to analyze and learn from near-misses and incidents, helping to prevent future accidents.

b. Evidence in Case of Accidents

One of the most practical benefits of a dashcam is its role in providing irrefutable evidence in the event of an accident. The recorded footage serves as an objective witness that can accurately depict the events leading up to, during, and after a collision. This can be invaluable in insurance claims and legal disputes, helping to quickly establish fault and avoid wrongful blame.

c. Monitoring Driving Behavior and Vehicle Security

Dashcams are not only useful for recording external incidents but also for monitoring driving behavior. For parents of new drivers, fleet managers, or car rental companies, dashcams can track how a vehicle is being driven and ensure adherence to driving guidelines. Furthermore, with features like Parking Mode, dashcams continue to protect the vehicle even when it’s unattended, providing a level of security against theft, vandalism, or hit-and-run accidents.

How to choose the right dash cam

Choosing the right dashcam involves considering various features that align with your specific needs. Here’s a guide to help you select a dashcam that’s right for you:

1. Resolution: High-resolution video offers clearer and more detailed images, which can be crucial for identifying license plates or faces. Look for a dashcam with at least 1080p resolution, but if you want even greater detail, consider models with 2K or 4K resolution.

2. Field of View: The field of view (FOV) determines how wide an area the camera can capture. A wider FOV can cover more lanes and capture more of the roadside. However, too wide an angle can cause distortion. A FOV between 140° to 160° is typically a good balance, offering a wide view without significant distortion.

3. Night Vision: For clear recording at night or in low light conditions, ensure the dashcam has good night vision capabilities. Look for dashcams with enhanced sensors, infrared illumination, or WDR (Wide Dynamic Range) technology, which can improve recording quality in varying lighting conditions.

4. Storage Capacity: Consider how much storage the dashcam supports. Most dashcams use microSD cards, and you’ll want one that can handle at least 32GB to 128GB to avoid frequent overwrites. Some dashcams come with cloud storage options, providing backup and additional space.

5. Loop Recording and G-Sensor: Loop recording allows continuous recording by overwriting old footage, while a G-sensor ensures important footage is saved and not overwritten after an incident. These features are essential for effective and hassle-free operation.

6. Parking Mode: If you’re concerned about your vehicle while it’s parked, look for a dashcam with a dedicated parking mode. This feature uses motion or impact sensors to start recording even when the car is turned off.

7. GPS Integration: A dashcam with GPS can record your location and speed, which can be invaluable information in the event of an incident. It can also help with route tracking and speed management.

8. Connectivity Options Wi-Fi and/or Bluetooth connectivity can make it easier to transfer and manage footage or configure settings through a smartphone app. Consider whether these features are important for your convenience.

9. Reliability and Durability Finally, choose a dashcam from a reputable brand known for reliability and durability, especially in varying weather conditions. It should also have a good warranty and customer support.

Infographics on why you need a dash cam

Infographic source: https://www.dashwitness.com/

Rounding Up

Dashcams serve as a critical tool for modern drivers, offering a range of functionalities from continuous video recording to advanced incident detection. They work by capturing and storing footage of your journeys, employing loop recording to manage storage space efficiently and G-sensor technology to protect crucial evidence during accidents. Modern dashcams come packed with features like GPS integration for tracking location and speed, Wi-Fi and Bluetooth for easy file management, parking mode for monitoring your vehicle when you’re not around, and night vision capabilities for clear recording in low-light conditions.

The benefits of using a dashcam are substantial, from enhancing road safety and providing irrefutable evidence in the event of an accident to monitoring driving behavior and improving vehicle security. Whether you’re a regular commuter, a professional driver, or someone who occasionally hits the road, having a dashcam can offer peace of mind and a level of protection and accountability on the road.

As technology advances, the features and capabilities of dashcams continue to expand, making them an increasingly indispensable tool for anyone on the road. If you value safety, security, and the peace of mind that comes with having a reliable record of your driving experiences, investing in a dashcam could be a wise decision. Consider how a dashcam could benefit you in your daily driving life and choose one that fits your specific needs and preferences.

1 thought on “How do dash cams work? And why you should get one”

Leave a Comment