Eh, sometimes thats not an option if the an onramp doesn't create a new lane. I've lived and driven in California, Western Europe and New Zealand. Many (not all) California onramps come from tight cloverleafs or they are metered with stop lights, so you have to accelerate quickly to avoid going into the stopping lane (which will be covered in gravel, if it even exists). I never had this problem elsewhere.

I invite you to stop here: https://www.google.com/maps/@34.9773012,-110.5310232,3a,75y,... when there is traffic coming in behind you.

Please don't say: "oh it's a quiet road", I took the first example I could find of this kind of onramp.

Looks like you have plenty road to get up to speed there or slow down if you need to before merging but don't have a lot of area to merge.

I drive in NYC. Some of our merge lanes are pretty short also...if you can't merge you stop and wait...yes you're supposed to yield and not stop but guess what, if you simply can't merge what are you going to do run into a vehicle?