Safety Evaluation of Fog Warning Systems in a Connected Vehicle Environment Based on Sample Entropy

Table 1

Detailed information of each group in experimental scene design.

Group	Traffic flow	Technical level	Fog level
Group ①	Free-flow	Normal	No fog
			Light fog
			Heavy fog
Group ②	Free-flow	DMS	No fog
			Light fog
			Heavy fog
Group ③	Free-flow	HMI	No fog
			Light fog
			Heavy fog