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• Establish an accident database with the location, time, nature, and cause of accidents as well as the traffic conditions in which they occurred.
  
  
• For locations at which slow or stopped traffic causes rear-end collisions, consider posting warnings on variable message signs that are triggered by traffic occupancy.
  
  
• At un-signalized intersections with frequent accidents, consider speed sensors and warning signs for vehicles approaching too rapidly.
  
  
• In locations where excessive speed causes accidents consider:
  • variable message signs giving safe speeds under current conditions
  • sensors that detect vehicle speeds
  • a sign that both displays each vehicle's speed as it approaches and issues a warning message if the speed is excessive
    
    
• For curves at which trucks are likely to lose control, consider a system to weigh the trucks in motion, calculate their speed, determine if they are likely to lose control, and warn them via a variable message sign.
  
  
• At hazardous rail crossings, consider installing a highwayørail warning system to prevent impending collisions.