Should I take a taxi to my meeting?

Only if your meeting is outside of BTS/MRT range. If you are traveling between 7:00 AM and 10:00 AM or 4:00 PM and 8:00 PM, a taxi is almost guaranteed to make you late.

Is the train system safe for business attire?

Yes, it is very safe. However, the stations and trains are heavily air-conditioned, so have a light blazer if you are sensitive to cold.

Navigating Bangkok's Public Transport for Business Meetings

Use the BTS Skytrain and MRT subway to bypass Bangkok's notorious traffic, which can turn a 20-minute drive into a two-hour ordeal. Always carry a physical Rabbit Card for the BTS to avoid queueing at ticket machines during the morning rush.

Map your meeting locations. Before booking your hotel, plot your business meetings on Google Maps. If your meetings are clustered around Sukhumvit or Silom, stay within 500 meters of a BTS station to minimize walking in high humidity.
Purchase a Rabbit Card. Buy a Rabbit Card at any BTS station ticket office. Load it with at least 500 THB. This is essential for tap-and-go entry, saving you 10-15 minutes of standing in line at ticket kiosks during peak hours.
Use the MRT for cross-town travel. The MRT (Blue Line) is excellent for reaching areas like Sukhumvit or the financial district of Silom/Sathorn. If you need to switch between BTS and MRT, note that they use different ticketing systems; you must exit one station and re-enter the other.
Time your departures. Aim to be on the train by 7:30 AM or after 9:30 AM. Between 7:30 AM and 9:30 AM, trains are packed and you may have to let one or two pass before you can board.
Use Grab for 'last mile' transport. Once you exit the train station, use the Grab app to book a motorbike taxi (GrabBike) if you are in a rush. Motorbike taxis can weave through gridlocked traffic to get you to your specific office building entrance.

Should I take a taxi to my meeting?: Only if your meeting is outside of BTS/MRT range. If you are traveling between 7:00 AM and 10:00 AM or 4:00 PM and 8:00 PM, a taxi is almost guaranteed to make you late.
Is the train system safe for business attire?: Yes, it is very safe. However, the stations and trains are heavily air-conditioned, so have a light blazer if you are sensitive to cold.