What act could be considered an acceptance of the social contract

Observing traffic laws while driving in the highway is a form of accepting the social contract.
The social contract as expounded by John Locke entailed the people and government entering into a contract that the government would serve and act for the good of the people and people transferring some rights to the leviathan apart from natural rights.

Ais 190 b is 200c it can't be more then 100%