The Safety Bicycle is a type of bicycle that became popular in the late 19th century. It features two wheels of equal size, which provides better balance and stability compared to earlier designs like the penny-farthing. This design made cycling more accessible and safer for riders. The introduction of the Safety Bicycle also led to advancements in bicycle technology, including the use of chain drives and improved braking systems. These innovations contributed to the growth of cycling as a popular mode of transportation and recreation, influencing the development of modern bicycles we see today.