1. Square-box ambulances are huge in appearance and easy to be restricted when driving, especially in narrow roads or complex traffic environments.
2. Due to the closed design of the square ambulance, the air circulation is not smooth, which will cause certain discomfort to patients and medical staff.
3. The square ambulance is equipped with all kinds of medical equipment and medicines, which need to be stable during transportation and need professional maintenance and management, which increases the use cost and difficulty.