Safety system that understands human behavior will save cyclists

​In the project MICA, sponsored by FFI, researchers from Chalmers have investigated the interaction among cyclists and vehicles. They have developed a smart safety system that could reduce the number of fatal accidents in traffic with cyclists involved by up to 96 percent.

​The smart safety system continuously predicts what a driver should do to overtake a cyclist safely. The system acts when it sees a mismatch between what the driver does and what she or he should be doing. By collecting data from a test track, researchers have investigated how different factors affect behaviour in overtaking manoeuvres with oncoming traffic. Based on the data, the researchers have modelled how vehicles approach cyclists and integrated the models in frontal collision warnings and automatic emergency braking systems. The safety benefits from the systems have been evaluated through virtual simulation. 

“The smart collision warning alone promises a reduction of cyclists fatalities by 53-96 percent and a reduction of cyclists serious injuries by 43-93 percent” says Marco Dozza, professor at the Division of Vehicle Safety. 

Supports the Swedish car industry

The research results support the Swedish car industry in maintaining its world-leading role in designing advanced solutions for active safety. The models developed in the project can predict the driver's intention when approaching a cyclist from behind to perform an overtaking. These models can be integrated with existing systems and provide input on how an automated vehicle should safely and comfortably overtake a cyclist. 

"Our research supports the development of safety systems that can help a driver or an automated vehicle interact with cyclists safely. We have taken the driver models from a TRL level of 1-2 to a TRL level of 5 for this scenario" says Marco Dozza. 

TRL, Technology Readiness Level is a designation for a technology's maturity and associated technological risk. In research-intensive activities, technology maturity levels are used to confirm what activities are needed to implement the research results in new products/processes. TRL 5 means that the system is validated in a relevant environment. 

The research results may also affect test scenarios for Euro NCAP that provide consumer information on the safety of new cars. The goal of the Euro NCAP is a safer traffic environment, as well as fewer injuries in connection with accidents. 

The MICA2 project has already been granted and will expand MICA, developing new active and passive safety systems that can support a driver during all phases of an overtaking manoeuvre. 

On June 17, the research results will be presented at a seminar via Zoom​


Videos from data collection in the project

Flying overtaking with oncoming traffic (inside view)​ 

Accelerative overtaking with oncoming traffic (outside view)​​

Flying overtaking with oncoming traffic (outside view)​

Project webite

Published: Fri 12 Jun 2020.