How many glass breaking hammers must be placed on a bus?
- Four hammers.
- One hammer must be placed on the frame-head to the left of each door.
- It varies according to the size of the bus.
- Correct answer: At least two.
Why this is the answer
The correct answer in the official bank: At least two.
A bus must have at least two glass breaking hammers, so that in an emergency, such as a fire or stuck doors, a window can be smashed and people can get out. The words "at least" show that two is the minimum required number.