Emergency Braking With ACC: How Much Does V2V Communication Help?

Publikationstyp
Journal Article
Publikationsdatum
2022-09
Sprache
English
Author
Sidorenko, Galina 
Plöger, Daniel orcid-logo
Thunberg, Johan 
Vinel, Alexey 
Institut
Kommunikationsnetze E-4 
TORE-URI
http://hdl.handle.net/11420/14637
Enthalten in
IEEE networking letters 
Volume
4
Issue
3
Start Page
157
End Page
161
Citation
IEEE Networking Letters 4 (3): 157-161 (2022-09)
Publisher DOI
10.1109/LNET.2022.3190244
This letter provides a safety analysis for emergency braking scenarios involving consecutive vehicles. The vehicles use adaptive cruise control (ACC) with a constant-distance policy together with additional vehicle-to-vehicle (V2V) communication for emergency braking. We provide explicit formulas describing how the minimum safe inter-vehicle distance (IVD), for avoiding rear-end collision, can be shortened with the use of decentralized environmental notification messages (DENMs). More precisely, those formulas describe the dependency of such IVDs on V2V communication delay. We further show how these results can be used to compute probabilities of safe braking in the presence of packet losses.