Car crashes with two-wheelers in China: Proposal and assessment of C-NCAP automated emergency braking test scenarios
Licentiatavhandling, 2020

In China, around 15,000 users of two-wheelers (TWs) die on the road every year. Passenger cars are the dominating crash opponent of TWs in road traffic crashes. Understanding the characteristics of car crashes with TWs is essential to enhance cars’ safety performance and improve the safety of TW riders in China.

This thesis has three objectives. First, to define test scenarios of Automated Emergency Braking systems for cars encountering TWs (TW-AEB) in China (Paper I). Second, to assess whether cars with good ratings in consumer safety rating programs (e.g., New Car Assessment Program: NCAP) are also likely to perform well in the real-world. Finally, to understand the characteristics of the car crashes with TWs after the TW-AEB application.

To achieve the first objective, cluster analysis was applied to the China In-Depth Accident Study (CIDAS). The results were six test scenarios (Paper I), which are proposed for the Chinese NCAP (C-NCAP) TW-AEB testing.

To achieve the second and third objectives, counterfactual virtual simulations were performed with and without TW-AEB to a) a C-NCAP TW-AEB test scenario set ; b) an alternative scenario set based on the results of Paper I; and c) real-world crashes in China. Results show much higher crash avoidance rate and lower impact speed were found for C-NCAP scenario set than for the other two sets.

To better reflect car crashes with TW in China, longitudinal same-direction scenarios with the car or TW turning and perpendicular scenarios with high TW traveling speed are recommended to be included in C-NCAP future releases.

Future work will focus on assessing the combined benefit of preventive and protective safety systems for car-to-TW crashes in China.

cluster analysis

China

AEB

PTW

motorcycles

benefit assessment

C-NCAP

future safety systems

two-wheelers

ADAS

Online only: Password is required to get access to avoid uninvited persons “crashing” the on-line seminar. Please contact Bo Sui (bo.sui@autoliv.com) or Jonas Bärgman (jonas.bargan@chalmers.se) to get it
Opponent: Ulrich Sander, Veoneer.

Författare

Bo Sui

Chalmers, Mekanik och maritima vetenskaper, Fordonssäkerhet

Sui, B., Lubbe, N., Bärgman, J. Evaluating automated emergency braking performance in simulated car-to-two-wheeler crashes in China: A comparison between C-NCAP tests and in-depth crash data

Ämneskategorier

Annan maskinteknik

Övrig annan teknik

Farkostteknik

Drivkrafter

Hållbar utveckling

Innovation och entreprenörskap

Styrkeområden

Transport

Utgivare

Chalmers tekniska högskola

Online only: Password is required to get access to avoid uninvited persons “crashing” the on-line seminar. Please contact Bo Sui (bo.sui@autoliv.com) or Jonas Bärgman (jonas.bargan@chalmers.se) to get it

Online

Opponent: Ulrich Sander, Veoneer.

Mer information

Senast uppdaterat

2020-12-03