"Impolite behaviors on public transport often arise because people are absorbed in their own world—running late, rushing to work, or simply zoning out," explains etiquette and diplomatic protocol consultant, founder of Manners with Kristina and author of Elevate Your Presence, Kristina Szabova.

"It’s common to see commuters blocking train doors, not letting others off first, or taking up extra space during peak hours. I believe that in most cases, these actions aren't intentionally rude but it's more a case of being unaware of how small actions can inconvenience others."

While living in London, she has seen plenty of such ignorant commuter behaviors herself.

"Living in London and often traveling during rush hour on the Tube, I’ve seen my fair share of questionable behaviors—people doing their makeup, clipping nails, spraying perfume, eating food with overpowering smells, playing music without headphones, and even leaving behind empty bottles or rubbish. These moments often highlight how easy it is to prioritise our own convenience over being considerate of others in shared spaces."

Etiquette expert and founder of Etiquette Consulting Inc., Jules Martinez Hirst, agrees that we can be absorbed in our own little worlds. That's why we often forget to be mindful of others.

She also notes that we can be less tolerant of questionable behaviors on public transport, as busy schedules and crowded spaces can cause people to run out of patience.

"The riders of public transportation make up a wide demographic of people. Although different in makeup, they all commute in crowded spaces with crazy schedules and little to no personal space, so it is easy for people to snap at the littlest thing," she says.

According to etiquette experts, behaviors that are unacceptable on public transportation include:

1. Playing music or videos without headphones.
2. Having loud conversations, whether in person or over the phone.
3. Occupying extra seats with bags during busy times.
4. Eating smelly or messy food.
5. Grooming like brushing hair or clipping nails.
6. Ignoring priority seating for those who genuinely need it.
7. Leaving behind litter or empty bottles.

"It’s important to remember that public transport is a shared space, and it reflects how you present yourself to others," says Szabova. "While you might argue that doing your makeup isn’t inconveniencing anyone, ask yourself—would you do your makeup in front of your boss? It’s not just about the act itself but the impression it leaves on those around you. How you behave in public spaces speaks volumes about you, so be considerate, respectful, and mindful of the shared environment."

If a person sees fellow passengers violating any of these recommended rules, etiquette experts advise, addressing it, but of course, with caution, grace, tact, and kindness.

"For example, if someone is blocking a seat, you could politely ask, “Excuse me, is this seat taken?” instead of pointing out their lack of manners," says Szabova.

"I recall a moment on a quiet bus when a man was playing music loudly without headphones. Another passenger leaned over and said with a smile, “I love that song, but could you turn it down a little? Some of us are trying to relax.” The man smiled back, apologised, and put on his headphones—it was a perfect example of how kindness can defuse a situation," she shared.

In case someone ignores such requests or becomes aggressive, experts recommend avoiding escalating the situation by involving transport staff or letting it go completely.

"Remember that everyone is already stressed and on edge so you want to avoid escalating the situation," says Hirst. "Be polite but assertive. A simple polite request can go a long way to solving the problem. When in doubt, lead by example. If commuters are not giving up their seats, then you can offer up your seat, and hopefully, you will inspire others to do the same."

To ensure a pleasant commute for everyone, etiquette experts provide a few rules that public transport passengers should stick to:

1. Keep quiet—use headphones or speak softly during your phone calls.
2. Respect personal space—try not to bump, lean, or push others.
3. Share the space—your one fare entitles you to one seat. Do not take up more than that.
4. Be considerate—cough or sneeze into a tissue or your elbow so as not to spread germs.
5. Follow the rules—pay your fare and wait your turn to board.
6. Let others off first—mind the doors and allow passengers to disembark before boarding.
7. Leave personal grooming to the privacy of the bathroom—light touch-ups, like reapplying lipstick or fixing your hair, are fine if done discreetly, but anything more should be reserved for a private space.

"A little kindness and self-awareness can make all the difference. Whether it’s offering a smile, helping someone with heavy luggage, or saying “thank you” to the driver, these small gestures can transform a busy, chaotic commute into a more pleasant experience for everyone. After all, how we behave in shared spaces reflects not just our manners but also our respect for one another," says Szabova.

"Gratitude and kindness go a long way," agrees Hirst. "Thank people or give a nod when someone gives you their seat or helps you with your bag to show you appreciate their gesture. A little thoughtfulness can make public transportation better for everyone."