Amanda Bynes came one step closer to disaster Thursday night when she was driving around West Hollywood -- on a suspended license -- and got into an accident ... though, luckily, it was minor.

Amanda was driving her black BMW 5-series out of a parking lot on Sunset Boulevard around 10:30PM when she tapped the bumper of a white car in front of her, leaving little or no damage.
According to our camera guy ... Amanda was attempting to cover her face when she love-tapped the other vehicle -- and both drivers left without exchanging information on the scene.

It's unclear if the other driver reported the fender bender to cops, but it's a damn good bet Amanda and her suspended license did NOT.

TMZ published photos of Amanda smoking a marijuana pipe during a day of aimless driving around the San Fernando Valley on Tuesday.

Those pics and Amanda's recent driving record -- DUI arrest, multiple hit-and-run allegations -- have several cops worried she's going to kill someone on the road..