BEHT: Blockchain-Based Efficient Highway Toll Paradigm for Opportunistic Autonomous Vehicle Platoon

Table 1

Security feature comparison.

	PL characteristic	PL variation	Original PM characteristic	New PM characteristic
Real-time platoon	Predesignated/fully trusted	Unchanged	Fully trusted	Semitrusted
Opportunistic platoon	Snap election/semitrusted	Changeable	—	Semitrusted