Longitudinal Joints
A longitudinal joint is the interface between two adjacent and parallel asphalt mats. See the below links and resources on proper longitudinal joint construction best practices.
FPO's Longitudinal Joint Construction Best Practices
Improving Cold Longitudinal Construction Joint Performance, Ohio Asphalt, Summer 2019
Links:
Asphalt Institute: Longitudinal Joint Information
Pavement Interactive: Longitudinal Joint Construction