Question from a Non-Driver

Hi all, thank you a ton for what you do! I’m not a driver myself, but had a few relatives growing up who drove OTR, so I’ve always thought trucks were cool and appreciate all that you do for the rest of us. I have an interest in trucks and love photography, so lately I’ve been combining the two, gone to a few truck shows and such (see pics I took at the big Louisville show a few years ago for example). My question is, if I see a cool looking unit stopped somewhere, like at a rest area or something, is it fine to take a photo of it? I’ve also been getting into custom die-cast model making so can always use the reference pictures. But am I going to freak the driver out? I don’t wish to seem sketchy with all the weird people out there these days.