Part of that will depend on what kind of ear insert plugs you get and what kind of muffs you were using. They will show the rating for how many decibels they block on the box it's usually number like 26 28, etc. Custom molded ear plugs that go in your ear will typically block just a little more than the ones that you roll up and stick in your ear. I also use the in ear insert plugs and find the to work well. The key to using them is to roll them up and slip them in there a little ways (not too far it's not good for your ears) and then just hold them in place until they expand and make a good seal.
Agreed. The roll-up earplugs I get from work have a NRR of 33, I've never seen any muffs that come close to them.
I've got a set that is rated at -29db, but it was hard to find them - I had to search. They're Radians Terminator.
I'm like you. I ALWAYS wear earplugs when I'm on my bike if it involves getting on the freeway.
I wear ear plugs all the time driving my truck at work. It is loud in there. OSHA recommends hearing protection for any noise level where you have to raise your voice to be heard. I hear better wearing ear plugs, if that makes any sense. They cut 29db of noise - you can hear the engine, CB, Radio, etc just fine - (sure, they are loud if you aren't wearing plugs)
