January 6, 2026
A free version of the Intelligent Speed Assistance (ISA) Guideline provided to you by TISA!
Developed within TISA membership - by TomTom, Danish Road Directorate and BASt - the free version of the guideline is now available to all TISA Members.
Intelligent Speed Assistance (ISA) is an active safety system that assists the driver, that is becoming more commonly available in new vehicles across the world . ISA systems need to correctly determine the applicable speed limit, provide information to the driver on the current limit and provide feedback to the driver when the vehicle travels faster than the speed limit. ISA systems can be powered by two different input sources: sensor derived observations from front-facing in-vehicle cameras and digital maps.
The 🇪🇺 EU 2021/1958 directive mandates the use of ISA systems in specific vehicles from 1st January 2025.
ISA systems can be powered by two different input sources: sensor derived observations from front-facing in-vehicle cameras and digital maps. These two input sources are complementary and can work alongside each other in a ‘fused’ ISA system approach.
Without a quality assessment framework in place on how to correctly assess the quality of digital maps for ISA, there is a risk that results may vary from one 3rd party assessment body to another.
The guideline defines a fair, appropriate and relevant digital map quality assessment framework for its members who seek a 3rd party quality assessment. It merely offers guidance and does not prescribe any procedure that a map maker must follow.
The free version is available here: https://tisa.org/wp-content/uploads/SP26001_TISA_Guideline_ISA_Intelligent_Speed_Assistance_Free_Version.pdf
