1. Insufficient funds: ambulances require a large amount of money to purchase, maintain and operate.
2. Emergencies: disasters, accidents and other emergencies may lead to a lack of sufficient ambulances for medical organizations to handle emergencies.
3. Population growth: As the population grows, so does the demand for medical care in each region.
4. Updated technology: As technology continues to develop, medical technology is also being upgraded. New ambulances are equipped with more advanced medical equipment and communication systems, which can better support medical rescue work.