Types of Traffic Calming Measures...
 
Traffic calming measures can be separated into two groups based on the main impact intended. Volume control measures are primarily used to address cut-through traffic problems by blocking certain movements, thereby diverting traffic to streets better able to handle it. Speed control measures are primarily used to address speeding problems by changing vertical alignment, changing horizontal alignment, or narrowing the roadway. The distinction between the two types of measures is not as clear as their names suggest, since speed control measures frequently divert traffic to alternate routes, and volume control measures usually slow traffic.

Speed Control Measures    
Vertical Deflection Horizontal Deflection Horizontal Narrowing Other Measures
Speed Humps Traffic Circles Neckdowns Examples
Speed Tables Roundabouts Center Island Narrowings  
Raised Crosswalks Chicanes Chokers  
Raised Intersections Realigned Intersections    
Textured Pavements      
Speed Lumps *      
Speed Cushion *      
Split Speed Hump *      

Volume Control Measures    
Divertive, Restrictive Other Measures    
Full Closures Examples    
Half Closures      
Diagonal Diverters      
Lateral Shift *      
Median Barriers      

Combined Measures      
Examples      
      * - coming soon
       
       
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