Safety Evaluation of Access Management Policies and Techniques

APPENDIX B. FIELD DATA COLLECTION PROTOCOL

RUN 1

The driver continues through the entire corridor and notes the following features as well as any changes in the features. If features change, note the approximate cross street.

• Study corridor (primary route, beginning cross street, and ending cross street).
  
  
• Direction of travel.
  
  
• Type of operation (one-way or two-way).
  
  
• Number of lanes.
  
  
• Median type.
  
  
• Posted speed limit (if no posted speed limit, note the general operating speed of other vehicles).
  
  
• Lighting presence.
  
  
• Condition of pavement markings.
  
  
• Visual clutter.

RUN 2

The driver travels the corridor in the opposite direction and notes the following features related to each signalized intersection:

• Turning restrictions—major and minor road.
  
  
  • None (full movement).
  • No left turns.
  • No U-turns.
  • No right-turn-on-red.
    
    
• Protected left turn for mainline.
  
  
  • Yes.
  • No.
    
    
• Presence of nontraditional accommodation of left turn.
  
  
  • Michigan U-turn.
  • Superstreet.
  • New Jersey jug-handle.
  • Other.