The National Motorists Association issued a warning yesterday to holiday weekend travelers urging them to avoid or use caution when driving through the ten cities most notorious for speed traps. "Nothing can ruin a vacation more quickly than an undeserved speeding ticket," explained Eric Skrum, the group's communications director.

The top-ten list of speed trap cities was created with data from the SpeedTrap Exchange, a site that identifies locations that combine arbitrarily low speed limits with heavy traffic enforcement designed to raise revenue. The top-ten cities are as follows:

1. Detroit, Michigan suburbs
2. Washington, D.C.
3. Orlando, Florida
4. Colorado Springs, Colorado
5. Houston, Texas
6. Virginia Beach, Virginia
7. Austin, Texas
8. Baton Rouge, Louisiana
9. Nashville, Tennessee
10. Fresno, California