Document the problem
 

Be  a pedestrian detective-Rent a speed gun from a police supply store and measure clock a hundred cars at the intersection .Comparing their speeds to the posted speed limit. Video the problem—and capture your neighbors describing it. 

Make your case to the people who make a difference 
 

This may be a city council or, in smaller communities, the mayor. Explain the issue, and explain why it’s a problem: Speeding makes auto accidents worse, and small increases in speed can mean the difference between life and death if a pedestrian is hit.

Find allies
 

You can make your case stronger by bringing in a community group.Do you know where your groups meet?  Your most natural allies are groups involved with children and seniors: schools, churches, neighborhood associations, a local PTA. 

Keep at it
 

“Be prepared to make a nuisance of yourself.  “You can counter resistance by making it easier to install a speed hump than keep taking your phone calls.”