What is the definition of ‘punitive’ in the given context?

Subject: Writing

Topic: What is the definition of ‘punitive’ in the given context?

This is the context –
“The levies are aimed at promoting energy efficiency by becoming progressively more punitive as the engine capacity of vehicle increases.”

Punitive as a word refers to disciplinary or corrective measurement. Some synonyms for this word could be harsh, severe, stiff, austere, stringent etc. Here punitive could just mean strict. The sentence could be re-read if the word punitive could be exchanged with the word strict. The sentence will go as:

“The levies are aimed at promoting energy efficiency by becoming progressively more strict/ stricter as the engine capacity of vehicle increases.”

In other words, the sentence would mean that to increase energy efficiency the levies are getting stricter as the engine capacity increases.