If you've ever wondered what the purpose of those "bumps" off the side of the road are that make that weird noise when you drive over them, you no longer have to wonder. They are for your safety and protection, especially when you're being inattentive. Rumble strips have proven to be a useful tool against car accidents that could have been prevented.

1. RUMBLE STRIPS BY THE NUMBERS
Statistics That Prove They Work and Are Cost Effective

2. At around $0.30 per foot,
rumble strips are more cost
effective than guardrails,
culvert-end treatments and
slope flattening.

3. Rumble strips show a high benefit-to-cost ratio. They can save up to $64 million per year and
$1.3 billion in crash costs over 20 years.
This would equal a benefit-to-cost ratio of 36:1.

4. Installation of rumble strips on
Secondary Highways would prevent 8
deaths and 375 injuries per year.

5. In Oregon, rumble strips reduced head-on collisions by 44% on rural two-lane roads.
On urban two-lane roads, head-on crashes were reduced by 64%.

6. The average safety effects of installing rumble strips on rural multi-lane divided highways
have been estimated to be a 51% reduction in run-off-road crashes.

7. It’s proven fact: Rumble strips save lives.

8. RESOURCES
•
https://www.dot.ny.gov/programs/rumblestrips
•
http://www.oregon.gov/ODOT/HWY/TRAFFICROADWAY/docs/pdf/RumbleStripsFactSheet.pdf