I would think that having loud pipes must make a motorcyclist somewhat more noticeable in most situations. Some bikes are so loud that I can hear them before they're anywhere near me while I'm driving down the road! But, I can't help but think that when you ride a motorcycle, you take the risk into consideration and then you accept that risk. If you have to break the law, make your bike so loud that it's truly annoying to others (possibly an understatement), and basically have little consideration for others, all for the sake of feeling safer on the road, then I say you're not ready to take the risk of riding on the road. As much as I hate to admit this, riding on the road is a privilege, not a right (I think I got that legally correct). So, I wish other motorcyclists would remember that because I don't want my privileges revoked.