Yes, keeping your feet on the chair in front of you when sitting on a plane, bus, or train is generally considered rude and disrespectful to others around you. There are several reasons why this behavior is discouraged:
Lack of personal space: People sitting in front of you deserve to have their personal space respected. Placing your feet on their chair can invade their space and make them feel uncomfortable.
Hygiene concerns: Shoes can carry dirt, germs, and unpleasant odors. Putting your feet on the seat can dirty the area and create an unappealing environment for other passengers.
Damage to the seat: Resting your feet on the chair could cause wear and tear to the upholstery or even damage the seat, leading to unnecessary maintenance costs for the transportation company.
Safety issues: Keeping your feet up on the chair can be a safety hazard, especially during sudden stops or turbulence when your feet could impede your ability to react quickly.
To be considerate of others and maintain good etiquette while traveling, it's best to keep your feet on the floor or use footrests provided, if available. If you need to stretch or find more comfort, you can try to change your seating position or use travel accessories like neck pillows or lumbar supports. Respecting the personal space of fellow passengers creates a more pleasant and harmonious travel experience for everyone.