I learned about many customs and traditions in Singapore. For example, in Singapore, older women are called "Aunty" and older men are called "Uncle," even if you're not related! In the United States this might seem unusual to call strangers "uncle" or "aunty," but in Singapore, it is done as a sign of respect for the elderly.
Additionally, in the U.S. we are used to waiting in lines. When you have to wait for your food or to buy something, you stand in line. Here in Singapore, however, you stand in a queue (pronounced "Q"). Queues are used for everything here, and you absolutely should follow the queue, as cutting in line is extremely rude. Before you queue up for your food at a hawker center, however, you may want to find a seat for yourself. Another interesting custom is that while you may see an empty table and sit to claim your seat, in reality, the seat may have already been taken. Singaporeans often reserve, or chope, their seats by placing a packet of tissue on the tabletop. If you see a packet of tissue on the table, then it has already been reserved and you will have to keep looking!
While there are many customs and traditions here, a fourth and final tradition is one of keeping to the left. While on an escalator, or even walking on the street, the general unspoken rule is to keep to the left if you are slow. The right side on an escalator, for example, is to be used by those walking up the escalator instead of standing and waiting for it to take you up to the top of the stairs.
