Glossaries

Definitions: M - O

Median – The portion of a divided roadway separating the traveled ways for traffic in opposite directions  (NJDOT, 2006).

Median Crossover – An opening constructed in the median strip of a divided highway designed to allow traffic movements to cross from one side of the highway to the other. In some cases, the Access Management Engineer may require the design to be such that some movements be physically prohibited (GDOT Driveway Manual, 2004).

Median Width – The overall width of a median measured from edge of travel lane to edge of travel lane.  

Merging – The converging of separate streams of traffic to a single stream. 

Mitigation – sequentially avoiding impacts, minimizing impacts, and compensating for any unavoidable impacts (WSDOT, 2005).

Mitigation Plan – document(s) that contain all information and specifications necessary to fully implement and construct a compensatory mitigation project (WSDOT, 2005).

Nominal Safety – A design alternative’s adherence to design criteria and standards. 

Normal Crown – See Crown: Normal Crown

Operating Speed – Actual speed at which traffic flows.