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21 Source: UT-CTR. Figure 3-1. Land uses and conflicts adjacent to freight activity. Such barriers typically result in increased production and Some of these barriers can be specific to a particular mode distribution costs. In this context, examples of potential bar- (e.g., highway and road design impacts on trucking activities riers or interference with freight-transportation-related ser- or dredging impacts on waterway transportation), while other vices include the following: barriers may be more general across modes (e.g., limitations on hours of operation). Barriers not only affect freight activi- · Speed restrictions; ties along particular corridors and facilities, but they also · Limitations on hours of operation; may affect route choices and the ability to access freight and · Height and clearance impacts; manufacturing facilities. For example, if roads are designed · Size and weight limitations; with turning radii that are too tight, particular types of trucks · Corridor design impacts; may not be able to use these routes or access facilities that use · Environmental permitting; these roads. · Limitations on dredging operations and/or depositing of dredged material; Conflicts and Barriers Matrices · Backlog of waterway lock or channel maintenance; · Hazardous material (hazmat) routing restrictions; and The types of conflicts and resulting barriers to efficient freight · Gentrification that displaces, impedes, or increases the transportation are summarized in the conflicts and barriers costs of freight transportation. matrices found in Appendix A.