Trucks crossing the Latvia/Russia border

Hi! I’m a truck spotter from the UK visiting Latvia in late February solo, for the purpose of seeing and filming the old trucks driving between Latvia and Russia. I am staying in Rēzekne. I have a few questions regarding truck traffic, if anyone from that area is able to answer them.

1: Are EU trucks allowed in and out of Russia
2: Are Russian trucks allowed in and out of Latvia & the EU
3: Do trucks (for whatever reason) ever drive through the centre of Rēzekne rather than use the outer bypass?

I got called a Russian spy on r/Poland when I asked this lol, so to prove that my intentions are legit, I’m Seb’s Truck Stop on YouTube. My Poland videos are already released from the trip I took last month.

I understand that this is a very niche topic and is a long shot, so any answers are greatly appreciated!