In the Philippines, senior citizens can enjoy a 20% discount on public transportation fares, including buses, jeepneys, and trains, as stipulated by RA 9994. Additionally, they are exempt from the payment of airport terminal fees when travelling domestically. It's a good idea to carry a valid senior citizen ID to avail of these discounts easily. For more specific details, you may want to check with the local transport authorities or visit official government websites to ensure you have the latest information.