All of the following are types of Longitudinal joints except:

The nature of longitudinal joints in asphalt pavement refers to the connections formed between different lanes or elements of the pavement. Each type of joint serves specific purposes regarding load transfer, pavement integrity, and sealing against water infiltration.

A notched butt joint is indeed a type of longitudinal joint where two lane edges are placed adjacent to each other and at least one of them is notched to improve interlock and bonding. This type can help reduce the risk of edge cracking by enhancing the paving materials' performance along the joint.

However, a butt joint, notched wedge joint, and wedge joint are all recognized as potential methods used in constructing asphalt pavement joints. A butt joint typically encompasses the direct junction of two surfaces without any interlocking features, while a notched wedge or wedge joint includes tapered sections designed for better transition and load distribution.

The identification of the notched butt joint as an outlier in this context indicates that it is not traditionally categorized under standard joint types, despite its functional similarities to other types, making the distinction clear among the accepted terminologies and classifications.

Understanding the characteristics and functions of different joint types is crucial for maintaining the pavement's overall durability and functionality.