Mdot traffic maps3/23/2023 DC WeatherĪ chance of showers is expected across the Baltimore-Washington region on Wednesday followed by a slight chance of showers later in the day, according to the National Weather Service. Īs of 5:27 a.m., Light RailLink was experiencing delays in north and southbound service due to a disabled train, according to MDOT. This will affect routes 830 (Dunkirk-DC) and 840 (Prince Frederick-DC), according to MDOT. ĭue to driver shortage, the following Commuter Bus trip will not operate on Wednesday morning: Route 830 - Trip #-11. In addition, southbound buses are detouring on Queens Chapel Road at 30th Street and resuming their regular route on Arundel Road at Varnum Street. Alternatively, TTI is the ratio of the free flow speed to the congested speed.Due to downed power lines, northbound buses on Metrobus routes F1, F2, and R4 are detouring on Queens Chapel Road at 25th Street and resuming their regular route on Queens Chapel Road at Ager Road, according to Metro. For example, a TTI of 1.5 means a trip taking 10 minutes in uncongested conditions will take one and half times as long, or 15 minutes, in congestion. * TTI is the ratio of travel time during free flow to the same trip during traffic congestion. LOS A, B & C represent Uncongested conditions, where as LOS D corresponds to Moderate Congestion and LOS E & F represent Heavy Congestion. The signalized arterial roadways are classified based on the LOS grade obtained from the HCM based calculations. We classify the freeway and expressway congestion based on their TTI Values: Uncongested is less than 1.15, Moderate Congestion between 1.15 and 1.3, Heavy Congestion between 1.3 and 2 & Severe Congestion greater than 2. Roadway congestion falls into four categories: Uncongested, Moderately Congested, Heavily Congested and Severely Congested. This methodology utilizes weekday peak hour volumes to determine the effects of demand on the roadway Categories signalized arterial roadways), congestion was based on levels of service (LOS) calculated using 2000 Highway Capacity Manual (HCM) procedures. Vehicle probe speed data was used to determine the Travel Time Index (TTI)* on the majority of freeways and expressways, and the corresponding values were used to grade the congestion levels on those roadways. Traffic counts were used to evaluate congestion levels on signalized arterial roadways. Average peak hour vehicle speed was utilized on the freeways and expressways to monitor congestion levels. The Congestion Assessment was done using either of two methods, depending on the roadway type. A detailed corridor study may produce slightly different results since corridor studies are normally performed in greater detail. Note: these maps provide a generalized picture of congestion. The results may be used to compare traffic operations on State-maintained roadways in various jurisdictions. This allows users to easily determine the spatial extent of peak hour traffic congestion. The mapping was developed to depict the roadway performance. These countywide congestion assessment maps show levels of congestion on all major state roadways in Maryland, on an average weekday, during the morning (AM) and evening (PM) peak hours.
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