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There are four types of highways maintained by MDOT as part of the overall State Trunkline Highway System. In addition, there are systems of roads maintained by the federal government and local counties. There are frequent overlaps between designations when different types of highways share the same stretch of pavement in concurrencies.
The Maryland State Highway Administration (MDSHA, MDOT SHA, or simply SHA) is the state mode responsible for maintaining Maryland's numbered highways [1] outside Baltimore. [2]
The PASER scale is a 1-10 rating system for road pavement condition developed by the University of Wisconsin-Madison Transportation Information Center. PASER uses visual inspection to evaluate pavement surface conditions. When assessed correctly, PASER ratings provide a basis for comparing the quality of roadway segments. [1]
The Maryland Department of Transportation (MDOT) is an organization comprising five business units and one Authority: [2] Maryland Transportation Authority (Transportation Secretary serves as chairman of the Maryland Transportation Authority)
A pavement management system (PMS) is a planning tool used to aid pavement management decisions. PMS software programs model future pavement deterioration due to traffic and weather, and recommend maintenance and repairs to the road's pavement based on the type and age of the pavement and various measures of existing pavement quality.
The pavement condition index (PCI) is a numerical index between 0 and 100, which is used to indicate the general condition of a pavement section.The PCI is widely used in transportation civil engineering [1] and asset management, and many municipalities use it to measure the performance of their road infrastructure and their levels of service. [2]
Highway engineering (also known as roadway engineering and street engineering) is a professional engineering discipline branching from the civil engineering subdiscipline of transportation engineering that involves the planning, design, construction, operation, and maintenance of roads, highways, streets, bridges, and tunnels to ensure safe and effective transportation of people and goods.
The selection of lane width affects the safety, maximum capacity, and cost, of a highway. Safety is best at a width of 3.0 to 3.1 metres (9.8 to 10.2 ft) in urban settings, where both narrow (less than 2.8 metres (9 ft 2 in)) and wide (over 3.1 metres (10 ft)) lanes have higher crash risks.