Inspection in nj is emissions only, check engine light needs to be off and the emissions cycle as ready (so you can't just reset the computer right before the check), they just plugin to obd2.

Takes 5-10 minutes if theres no line.

Its free at state inspection places.

License registration insurance

https://pweb.nj-cleanair.com/waitqueue/pages/facility/home.jsf has webcams to show the line at all the locations.

Oh yeah, they also pressure test your gas cap.