Issues Addressed

• Speeding (primary)
  
• Traffic volume (secondary)
  

Applications

• Local streets, local collectors, collectors.
• Works well when combined with speed humps.
  

Advantages 

• Reduces vehicle speed.
• May reduce traffic volume.
  
• Opportunity for landscaping and visual enhancements to the neighborhood.
• Can accommodate emergency vehicles.

Disadvantages

• Drivers can choose to speed down the center line when no vehicle is traveling in the opposite direction.
• Removes some on-street parking.

Evaluation Considerations

• Speed reduction most effective when two vehicles are traversing choker in opposite directions at the same time.
• Speed reduction more effective if combined with vertical deflection (Ex. speed humps, raised crosswalks)
  

Design/Installation Considerations

• Adequate space behind or in front of chokers may be provided to avoid having bicyclists compete for space with vehicles.
  
• Landscaping must be designed so as not to obstruct sight lines.