Traffic Recognition System: Basics Explained

Traffic signs are of great assistance to drivers. These signs provide necessary information while driving cars through various areas but sometimes these signs can be hard to notice and navigate when a person is focused on driving. Thus, the growing necessity for traffic sign recognition systems is being felt worldwide. Car manufacturers are actively developing these systems to provide more comfort while driving. Let us try and understand these systems.

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What is Traffic Sign Recognition?

Traffic Sign Recognition or TSR is a technology by which vehicles can recognize and study the road signs that are ahead of them. Various automotive suppliers are actively working on enhancing this technology.

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GPS Based TSR

These systems contain pre-loaded information. How this system works is that it monitors the vehicle's position and, relative to that position, looks for traffic signs around. A database is maintained for all this information so that that information can reach the driver.

The pre-loaded information can be tricky in some situations. Since the data is not being collected in real-time and is instead pre-loaded, the chance of some inaccuracies is there. The GPS can be updated through software upgrades, but still, the system has some inherent flaws that are difficult to remove.

Camera-Based TSR

Camera-based systems provide real-time analysis of traffic signs ahead. These are loaded on the front portions of the car. The feed is displayed on a screen on the dashboard or the infotainment system. Generally, the image is altered so that reading it is easier for the user. In addition, since the feed is live and in real-time, the chances of errors are significantly reduced in these cases.

Like headlights, a beam from the camera detects any signs ahead and loads it onto the system with the help of software.

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Detection process

The shape, color, and information – all of these factors into detecting traffic signs. Currently, most of the TSR systems can track speed limit signs. But the newer variations can detect signs like 'Stop' and 'No Entry.'

Advantages of TSR

• Ease for the driver to process information instead of looking at it themselves and figuring the signs out.
• Many systems now allow for reading traffic light signals and their color along with people.
• Reduction in chances of accidents and injuries.

Limitations of TSR

• Weather is one of the most important factors limiting TSRs. If the road ahead is foggy and unclear, the detection can be pretty tough.
• There might be an error in detecting signs that are mobile instead of static ones. Time-based signs become harder to track, and the information relayed to the user might be wrong.
• The system might confuse the light emissions from buses and the light emissions from traffic signals!

While the limitations of the technology are hard to ignore, overall, there is no doubt the future of driving is with Traffic Sign Recognition systems.