1.   Curbside check-in is banned and only ticketed passengers will be allowed past safety checkpoints.

2.   Law enforcement agencies in every state will conduct child safety checkpoints.

3.   On Election Day, state troopers set up a safety checkpoint in Leon County, along the only route to a predominantly black precinct polling place.

4.   Russell conducted several safety checkpoints in West Palm Beach last year for the study.

5.   In the asthma study case, federal regulators found that researchers had bypassed several safety checkpoints.

6.   Patrol officials said later that it was a spur-of-the-moment safety checkpoint, unauthorized by higher officers but not intended to scare anyone away from the polls.