Street Design Manual

Measures of effectiveness (MOEs) - Measurable quantities and characteristics used to compare traffic impacts from various alternatives. Measures of effectiveness quantify traffic impacts and allow for an objective examination of the results. Traffic impacts can be quantified in a variety of ways such as delay, queuing or average speed and at different scales. In many instances, the specific quantity for a given MOE is not as significant as the relative change of in MOE quantity between different alternatives. “Scale” refers to impacts for a specific area under review: an isolated intersection, all intersections along a particular road or all intersections within a roadway network. Median - That portion of a divided roadway separating the traveled ways for traffic in opposite directions. Mitigation - Alleviation, reduction, abatement or diminution of traffic impacts created by a development. Mixed Use Development - A single real estate project that consists of two or more land use classifications between which trips can be made without using the offsite street system. Multimoda l - Being used by more than one travel mode such as motor vehicles, pedestrians and bicycles. Multimodal Level-of-Service (MMLOS) - A type of analysis where the level-of service of each travel mode on a facility is evaluated simultaneously. NCDOT - North Carolina Department of Transportation Offset - The time that the reference phase of a traffic signal begins (or ends) relative to the system master time zero. On-Street Bike Corral - On-street Bicycle Parking Corrals are bicycle racks placed in the parking lane on the roadway. Pass-by Trip - A trip made as an intermediate stop from an origin to a destination that does not require a route diversion. Phase (signal) - The part of the signal cycle allocated to any combination of traffic movements receiving the right-of-way simultaneously during one or more intervals. A phase includes the green, yellow change, and red clearance intervals. Phase Sequence - The sequence of service provided to each traffic movement, or a description of the order in which left-turn movements are served relative to the through movements. Phase Settings - Controls used to influence the start, duration and ending of a signal phase. Primary Trip - A trip made for the specific purpose of visiting a destination. Stopping at the destination is the primary reason for the trip. Pavement Markings - All lines, words or symbols, except signs officially placed within the roadway or parking area to regulate, warn or guide traffic. Peak-Hour Volume - Hourly traffic volume used for roadway design and capacity analysis, usually occurring during one or more peak travel hours during a 24 hour period. Public Works Director - The Department Head of the City of Raleigh Public Works Department. Reference Phase - One of the two coordinated phases of a traffic signal.

Raleigh Street Design Manual – Page 106