Hello Bolt,
thank you for introducing yourself here in the community forum.
You might be interested in joining the regular sessions with Grab and TomTom. We started this last year to have a forum to exchange about organized editing and potential concerns of community. We will soon have a second session. We are sort of aiming at a quarterly cadence.
See here for further details:
Salim is setting it up. You might want to get in touch there to also coordinate a bit activities. We all have the same goals to make OSM the best open datataset of geodata…
Could you please give some additional details on how you plan to improve the data? Do you have a team of mappers located in Thailand? What other source do you plan to use for such local-knowledge-only details like one-ways and turn restrictions?
As turn-restrictions requires splitting roads and adding relations: This is a rather advanced topic. Please ensure that your editors have the necessary tools and training to not harm existing data.
Looking forward to hear more from you,
Stephan