1.   The roadwork caused a backup in traffic.

2.   But since traffic at Newark Airport is light in the early afternoon, the closing did not cause major backups, she said.

3.   City officials had long feared that the ground-up food would overwhelm the sewer system, causing backups and flooding.

4.   More passengers on each flight will cause backups at the boarding gate.

5.   The extra security measures inside the main entrance caused a backup of workers to spill outside the revolving glass doors onto the sidewalk on Fifth Avenue.

6.   The hospital also ran out of space, which caused a backup in the emergency room with patients who were admitted and waiting for rooms, Dosh said.

7.   The fear is that a large food distribution would cause the exodus to stop, which would cause a backup and creates a risk of a cholera epidemic.

8.   There, some of the tollbooths had been dedicated exclusively to drivers using the new system, causing tremendous backups at booths still taking cash and tokens.

9.   They clog blood vessels, causing backups and starving tissues of oxygen.

10.   This, he has found, causes a backup of water that seeps into walls.