68 Barracuda 440 getting hot in traffic

Need lots more info. What size radiator is in the car? Is it a mechanical or electric fan? Is there a fan shroud? What temp is your thermostat? Do you know if you have a standard or high volume water pump? Are you running stock or aftermarket pulleys?

212-215 isn’t the end of the world if it stops climbing there, but it it increases to that and keeps climbing then you have an issue.