The purpose of the "Title Safe" is precisely what its name implies: a safe place to put titles, text as well as other graphics. Title safes were essential as television first began because of the variety of cropping different old TVs had. Now in the 21st century, many have disregarded the importance of the title safe because of the modernization of most screens people use, however, using the title safe is as important now as it was then.
Why is understanding title safe areas so important even during the era of modern televisions?
The use of title safes is still vital to the post-production process because while most viewers in modernized areas will use a screen with a 16:9 ratio, many viewers don't. Many viewers across the world use screens with either different aspect ratios, or have displays capable of 16:9 that is set up differently (4:3, for example).