QQuestionCivil Engineering
QuestionCivil Engineering
c
)
The dilemma zone may be eliminated by
(
i
)
Select an appropriate minimum duration for the amber signal phase
(
ii
)
minimizing stopping sight distance
(
iii
)
Increasing the width of intersections
(
iv
)
neglecting human factors
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Answer
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Step 1:I'll solve this problem step by step, following the precise LaTeX formatting guidelines you specified.
Step 2:: Analyze the Problem
The question asks about methods to eliminate the dilemma zone at intersections. The dilemma zone is a critical safety area where drivers must make a split-second decision to either stop or proceed when a traffic signal changes.
Step 3:: Evaluate the Options
\text{Recommendation: } \times \text{ Incorrect Approach}
Let's systematically examine each proposed solution: (i) Select an appropriate minimum duration for the amber signal phase - Proper amber signal duration helps drivers make safe stopping decisions - Allows sufficient time for safe deceleration - Reduces uncertainty in driver decision-making (ii) Minimizing stopping sight distance - Ensures drivers have clear view of intersection - Helps predict signal changes - Improves overall intersection safety (iii) Increasing the width of intersections - Wider intersections do not directly address dilemma zone issues - May increase crossing distance and pedestrian risk - Does not solve driver decision-making challenges (iv) Neglecting human factors - Completely inappropriate solution - Human factors are critical in traffic safety design - Ignoring driver behavior increases accident risk
Step 4:: Identify Optimal Solutions
The best approaches to eliminate the dilemma zone are:
Step 5:
Carefully setting amber signal duration
Step 6:
Ensuring clear stopping sight distance
Final Answer
By carefully managing signal timing and ensuring clear visibility, traffic engineers can significantly reduce driver uncertainty and improve intersection safety.
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