There seem to be a lot of truckers on I-95 who are not a bit concerned about this. Either that or the police have a policy of not giving tickets unless the trucker is going 15+ mph over the speed limit. I understand that truckers are under time pressures, but a few of them literally throw their weight around at very high speeds.
I don't know what part of I-95 you were on, but doing the speed limit there is a great way to get rear-ended.