The balanced vehicular traffic model is a macroscopic model for vehicular traffic flow. We use this model to study the traffic dynamics at highway bottlenecks either caused by the restriction of the number of lanes or by on-ramps or off-ramps. The coupling conditions for the Riemann problem of the system are applied in order to treat the interface between different road sections consistently. O...

Adequate highways are of vital concern to every citizen of Indiana. They are an integral part of modern life. They provide the most impor­ tant means of bringing people together— of permitting anyone to live a full and happy life. Providing adequate highways within the limitations of funds provided, knowledge available and time required is the respon­ sibility which the public has assigned thro...

An interesting approach to a study of the development of U. S. stand­ ards for highway signs and markings is along historical lines. The first effective step toward national standardization of highway signs was taken by the Mississippi Valley Association of State Highway Departments in 1922 when the Association appointed a committee of five to study the subject. The Association adopted the comm...

The balanced vehicular traffic model is a macroscopic model for vehicular traffic flow. We use this model to study the traffic dynamics at highway bottlenecks either caused by the restriction of the number of lanes or by on-ramps or off-ramps. The coupling conditions for the Riemann problem of the system are applied in order to treat the interface between different road sections consistently. O...

We present the design and veriication of inter-vehicle communication protocols for degraded modes of operation on Automated Highway System (AHS). We consider various hardware and sensor faults that can develop on the automated vehicle in an AHS and design discrete event supervisory controllers to stop the faulty vehicle or take it out of the highway in a safe manner. The protocols are veriied f...

The balanced vehicular traffic model is a macroscopic model for vehicular traffic flow. We use this model to study the traffic dynamics at highway bottlenecks either caused by the restriction of the number of lanes or by on-ramps or off-ramps. The coupling conditions for the Riemann problem of the system are applied in order to treat the interface between different road sections consistently. O...

background: the aim of this study was to assess the effects of road deicing salt on the quality of the ground water resources in hamadan province during winter season. methods: water samples were taken monthly from thirty wells located around the hamadan-asadabad highway. the quality of well water was examined by measuring amount of sodium, chloride, total hardness, total dissolved solid, elect...