DRLs are lights that are on all the time...typically the high beams running at low voltage. Autolight on the other hand I assume is in reference to a light setup where the lights will automatically turn on when it starts raining or gets darker. Autolight, if this is the case, would be a heck of a lot better than DRL. Sadly both setups make for lazier drivers and especially bad in DRLs is that most of the time people forget to turn on their lights anyway when its raining in the daytime because they can see with the DRLs, problem is it they dont turn on their rear lights...thus no one can see them. Its my opinion that DRLs are pointless.