Understanding fluid dynamics is really important for making transportation systems safer. However, it can be quite challenging. Let's break down some of these challenges:

1. Fluid Behavior is Complicated: Fluid dynamics deals with how liquids and gases move. This involves complex math, like the Navier-Stokes equations, which can be tough to solve. Because of this, it’s hard to predict how fluids will act in different situations.

2. Changing Environment: Things like the weather, rough air, and changes in the environment can make things more complicated. These factors can greatly affect how well transportation systems work and how safe they are.

3. Not Enough Data: Sometimes, we don't have enough good data from transportation systems. Without proper information, it's hard to analyze fluid dynamics effectively. This lack of data makes it tricky to predict possible dangers.

Possible Solutions:

• Better Software: Using advanced computer programs and simulation tools can help with some of the complicated parts of fluid dynamics.
• Working Together: By collaborating with different fields and sharing data, we can improve our understanding and make better predictions.

In conclusion, even though making transportation safer using fluid dynamics has its challenges, there are clear steps we can take to move forward.