What Are Advanced Driver Assistance Systems: ADAS Overview
Advanced driver assistance systems (ADAS) help improve the safety of everyone in the car to help them arrive safely to their destination. These technological features are essential as the majority of serious car accidents are due to human error.
Here we discuss what are advanced driver assistance systems (ADAS), provide examples of advanced driver assistance systems, and what coding standards are essential to the development of advanced driver assistance systems.
Read along or jump ahead to the section that interests you the most:
- What Are ADAS?
- Why Are ADAS Important?
- Which Standards are Important for ADAS?
- How Static Analysis Helps Ensure Safe, Reliable ADAS
What Are Advanced Driver Assistance Systems (ADAS)?
Advanced driver assistance systems are technological features that are designed to increase the safety of the driver and their passengers. These systems use a human-machine interface to improve the safety and reaction times of the driver through early warning and automated systems.
Examples of Advanced Driver Assistance Systems (ADAS)
Some advanced driver assistance systems features have become standard for automobiles, including automatic braking systems (ABS) and adaptive cruise control (ACC). While others are available as add-ons, like automatic parking, blind-spot monitors, and collision avoidance monitors.
In addition, there are some features that are exclusive to fully autonomous cars.
📕 Related Resource: Learn more about autonomous cars and the six different autonomy levels.
Why Are Advanced Driver Assistance Systems (ADAS) Important?
Advanced driver assistance systems are important because according to the National Highway Traffic Safety Administration, an estimated 94% of serious car accidents are due to human error. Fortunately, even the most basic advanced driver assistance systems — like ABS — can help improve the safety of everyone in the car.
Which Standards are Important for Advanced Driver Assistance Systems (ADAS)?
In order for advanced driver assistance systems to operate safely and reliably, they need to be developed following the right functional safety and security standards. These, in turn, require safe and secure coding standards to be enforced.
A risk-based functional safety standard, ISO 26262 applies to the electric and electronic systems in vehicles including ADAS components. The standard outlines specific steps for each phase of the automotive equipment and systems lifecycle to ensure safety from the earliest concept.
Automotive Safety Integrity Levels (ASILs) are a key component of ISO 26262, as they measure the level of risk for automotive equipment and system components. The more complex the piece of equipment or system is, the greater the risk that there’ll be a systemic or hardware failure.
📕 Related Resource: Learn more about ISO 26262 and ASIL.
SOTIF (ISO 21448)
SOTIF (ISO 21448) is a functional safety standard that provides guidance on design, verification, and validation measures to achieve safety of the intended functionality (SOTIF). It considers situations that cause safety hazards that do not result from system failures.
It applies to systems where the proper situational awareness is critical to safety especially emergency intervention systems (e.g. emergency braking systems) and Advanced Driver Assistance Systems (ADAS) with levels 1 and 2.
Only faults not already covered by other standards are considered and is not intended for existing functions like dynamic stability control (DSC) systems or airbags.)
ISO 21448 complements ISO 26262, as it covers malfunctions not resulting from system failure and those from technical shortcomings caused by the original design. Some of the measures apply to innovative updates of previous functionality.
Currently, under development, ISO 21434 is an automotive standard that focuses on cybersecurity risks in the electronic systems of road vehicles. The standard will help to ensure that cybersecurity considerations are incorporated into every automotive device and product.
Even though the standard will not be released until sometime next year, there are still practices that you can adopt to ensure the security and safety of vehicles.
📕 Related Resource: Learn more about ISO 21434 and how to prepare for it.
CERT is a secure coding standard that supports C, C++, and Java — all of which are used in the development of automotive software. The standard helps to identify and eliminate software security vulnerabilities as the code is being written.
MISRA provides coding guidelines for developing safety-critical systems, including automotive software in C and C++. Compliance with the standards is strongly recommended as it helps to ensure that automobiles are safe and reliable.
📕 Related Resource: Learn more about how to improve embedded coding with MISRA.
AUTOSAR has developed a coding standard for C++14, for the Autosar Adaptive Platform for connected and autonomous vehicles. This helps to ensure that automotive software is safe, secure, and reliable.
📕 Related Resource: Learn more about AUTOSAR coding guidelines.
How Static Analysis Helps Ensure Safe, Reliable Advanced Driver Assistance Systems (ADAS)
The most efficient and effective way to ensure that software in advanced driver assistance systems are safe, secure, and reliable is to use a static analyzer — like Helix QAC.
By using Helix QAC, you are to apply coding guidelines to verify that your software meets the necessary requirements. In addition, Helix QAC can also improve the quality of your software by:
- Enforcing coding standards and detecting rule violations.
- Detecting compliance issues earlier in development.
- Accelerating code reviews and manual testing efforts.
- Reporting on compliance over time and across product versions.
See how Helix QAC can help you produce safe, secure, and reliable automotive embedded software.