Question

Arrange the following crowd disaster processes in sequencing order: A. High desired velocity B. FIST C. Over crowding D. Trample disaster

• A. A, B, C, D
• B. B, C, A, D
• C. C, D, A, B
• D. D, B, A, C

Hint:

Crowd disasters usually move from unsafe movement pressure to congestion and finally to physical disaster. Identify the starting behaviour and final outcome to arrange the sequence.

Answer 1

The Correct Option is A

Concept: Crowd disasters develop through a sequence of unsafe crowd behaviour and crowd pressure. When people strongly desire to move quickly, it may create pressure, congestion, and finally trampling.

Step 1: Understanding the first stage.
High desired velocity means people want to move fast. This usually happens due to panic, urgency, attraction, fear, or pressure from behind. \[ \text{High desired velocity} \Rightarrow \text{Fast and uncontrolled movement} \]

Step 2: Understanding the second stage.
FIST represents a crowd process related to unsafe crowd dynamics. When many people try to move quickly through limited space, crowd movement becomes unstable. \[ \text{High desired velocity} \Rightarrow \text{FIST condition} \]

Step 3: Understanding overcrowding.
After unsafe movement pressure increases, overcrowding develops. In overcrowding, people do not have enough space to move safely. \[ \text{FIST} \Rightarrow \text{Over crowding} \]

Step 4: Understanding the final disaster stage.
When overcrowding becomes extreme and people fall or are pushed, a trample disaster may occur. \[ \text{Over crowding} \Rightarrow \text{Trample disaster} \] Therefore, the correct sequence is: \[ A, B, C, D \]