Cracking in asphalt roads is a common problem that affects their lifespan. Scientists studied different tests to see how well asphalt mixes resist cracking. They found that some tests were sensitive to changes in the mix, like binder content and recycled asphalt (RAP) source. High RAP content can perform as well as regular mixes, depending on the RAP source. Adding more binder can improve cracking resistance in mixes with stiff RAP materials. This shows the importance of carefully designing asphalt mixes with RAP materials to prevent cracking.