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What do Pennsylvania police look for before they stop someone on suspicion of DUI?

Posted by Sean Quinlan | Jan 13, 2015 | 0 Comments

In Dauphin and surrounding counties most DUI arrests occur at night. The following is a list of
indicators that state and local police use to suspect someone might be DUI. The list is based
upon research conducted by the National Highway Traffic
Safety Administration (NHTSA):
• Turning with a wide radius
• Straddling the center of lane marker
• Almost striking an object or vehicle
• Weaving
• Swerving
• Going more than 10 mph below the speed limit
• Stopping for no reason in a traffic lane
• Following too closely
• Drifting
• Running tires on the center line or lane marker
• Braking erratically
• Driving into opposing or crossing traffic
• Signaling in a way that doesn't match driving
actions (for example, signaling left and then turning
• Slow response to traffic signals
• Stopping inappropriately
• Turning abruptly or illegally
• Accelerating or decelerating rapidly
• Driving with the headlights off (at night)
If you or a loved one have been arrested for DUI call Attorney Quinlan today at (717)202-2277 or visit us online at

About the Author

Sean Quinlan

Attorney Quinlan has practiced law in Pennsylvania since 2001. He earned his J.D. at Widener University School of Law in Harrisburg, PA, and earned his B.A. at Bloomsburg University in Bloomsburg, PA. He is a member of the Pennsylvania Bar. He also belongs to the Pennsylvania State Bar Associati...


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