It is important to understand that provisions in Part 8 of the MUTCD are intended to be applicable to both LRT and conventional railroads therefore, when the phrase "grade crossing" is used by itself without the prefix "highway-rail" or "highway-LRT" it refers to both highway-rail and highway-LRT crossings. In a mixed-use alignment, the LRT vehicles or buses do not have ROW over other roadway users at grade crossings and intersections and LRT vehicles are usually controlled with the same devices used by general traffic. This includes streets, transit malls, and pedestrian malls where the traveled way is shared. Mixed-use–An alignment where the LRT operates in mixed traffic with all types of road users.In a semi-exclusive alignment, LRT vehicles usually have ROW over other roadway users at grade crossings. Semi-exclusive–An alignment where the LRT operates within a separate traveled way or along a street or railroad ROW where motor vehicles, pedestrians, and bicycles have limited access and cross at designated locations only.Because the alignment does not have grade crossings, there are no provisions for traffic control devices. Subways and aerial structures are included within this group.
Motor vehicles, pedestrians, and bicycles are prohibited within the traveled way. The alignment is grade-separated or protected by a fence or traffic barrier.
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