Advanced Dilemma Zone Detection
Extend Pedestrian Crossing Time
- - rt )
SIGNALS SIGNALS
Advanced Dilemma Zone Detection
The Advanced Dilemma-Zone Detection system adjusts the start time of the yellowsignal phase ( i . e . earlier or later ) based on observed vehicle locations and speeds . The Advanced Dilemma-Zone Detection system minimizes the number of drivers that are faced with the dilemma of determining if they should stop at the intersection or drive through the intersection based on their speed and distance from the intersection .
Extend Pedestrian Crossing Time
Increases time for pedestrian walk phases , especially to accommodate vulnerable populations , such as children and the elderly .
Cost $
Low Cost / Quick Build alternative available
Cost $$
Relevant Crash Types Rear-End
Safe System Hierarchy |
Tier 1 |
Tier 2 |
Tier 3 |
Tier 4 |
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Manage Conflicts in Time |
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Relevant Crash Types Pedestrians at Signalized Intersections
Safe System Hierarchy |
Tier 1 |
Tier 2 |
Tier 3 |
Tier 4 |
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Manage Conflicts in Time |
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APPENDIX B : COUNTERMEASURES TOOLBOX B-30