Table 1 Parameter comparison table of tripartite game evolution model.

From: Challenges and opportunities of hydrogen energy application in public transportation in the post-epidemic period

Symbol

Description

Symbol

Description

x

Probability of the manufacturer developing low-carbon cars

G

Goodwill enhancement value

y

Probability of OPTE carrying out low-carbon reform

L

Operating cost for OPTE

z

Probability of consumers choosing low-carbon travel

M

Income obtained by OPTE

C

Investment cost for the manufacturer

F

Public travel expenditure for consumers

P

Revenue obtained by the manufacturer

Q

Consumers’ gain

a

Carbon quota

S

Subsidy

A

Green environmental benefits

α

Consumers’ Green Preference Coefficient