In traffic operations, the aim of transportation agencies and researchers is typically to reduce congestion improve safety. To attain these goals, need continuous accurate information about situation. Level-of-Service (LOS) a beneficial index operations used monitor freeways. The Highway Capacity Manual (HCM) provides analytical methods assess LOS based on density highway characteristics. Gener...

OBJECTIVES To evaluate manual activity capacity (i.e. activity capacity to perform hand activities) and its relation with body functions of the hand and forearm in children with congenital hand differences (CHD) METHODS: We assessed 10-14 year-old children with CHD (N = 106) using a functional handgrips test. Measurements of body functions included joint mobility and muscle strength. Patient ch...

The evaluation of capacity at signalized intersections is an important component in the proper planning, design, operation, and management of urban road street network. A procedure for determining the saturation flow rates at signalized intersections is presented in this paper; the procedure differs substantially from the procedure as discussed in the Highway Capacity Manual (HCM). ANalysis of ...

Traffic sign and mile-marker detection and classification are among the important components of highway asset management systems. The significant number of these high-quantity and low-cost assets in US highways can negatively impact on quality of any manual data collection and analysis. To address these challenges, this paper presents an efficient pipeline for video-based detection and classifi...

The effect of trucks on the level of service is determined by considering passenger car equivalents (PCE) of trucks. The current version of Highway Capacity Manual (HCM) uses a single PCE value for all tucks combined. However, the composition of truck traffic varies from location to location; therefore, a single PCE value for all trucks may not correctly represent the impact of truck traffic at...

1 The procedures detailed in the Highway Capacity Manual (HCM 2010) estimate capacity and 2 several operational measures dictating level of service for freeway facilities and surface streets. 3 However, these methods do not consider cases in which spillback occurs from one facility type 4 to another. The queueing effects in oversaturated conditions as they propagate upstream – onto a 5 freeway ...

Transportation networks and governments are both hierarchically organized. In some states state government finances most of the highways, while in other states similar roads are financed locally. Larger governments attain scale economies. However they also tend to be more bureaucratic and have higher operating costs, all else equal, due to problems such as span of control. This study relates hi...

A well developed and maintained highway infrastructure is essential for the economic social prosperity of modern societies. Highway maintenance poses significant challenges pertaining to ever-increasing ongoing traffic, insufficient budget allocations lack resources. Road potholes detection timely repair a major contributing factor sustaining safe resilient critical road infrastructure. Current...