Check out: https://austroads.com.au/about-austroads https://austroads.com.au/about-austroads https://www.ite.org/ https://www.ite.org/ https://www.nationalaca

Check out: https://austroads.com.au/about-austroads https://austroads.com.au/about-austroads https://www.ite.org/ https://www.ite.org/ https://www.nationalacademies.org/trb/transportation-research-board https://www.nationalacademies.org/trb/transportation-researc... Honestly a lot of research in the transportation engineering field is paywalled. Some state DOTs have research departments that have free resources.