T urning left across opposing traffic at a signalized intersection could result in a traffic accident, as well as create motorist delay. A solution to the left-turn problem may be the addition of a left-turn phase when certain guidelines are met.’ After a decision has been made to add a left-turn phase, one of two basic alternative phasing methods is commonly used. In Kentucky, the predominant ...

Nonlinear field is of importance for the design and operation of circular machines and nonlinear beam dynamics has been intensively investigated both theoretically and experimentally [1]. Theoretically, nonlinear elements are designed on purpose to assist the operation of the machines e.g., the correction of the chromatic aberration and/or slow extraction with the help of sextupole magnets, the...

This thesis proposes two models that estimate the capacity of an intersection with actuated control. The capacity of an approach to or a lane group of the intersection is a function of the saturation flow rate, the green time allocated to this approach or lane group, and the cycle length of the intersection. The Minimum Delay Model estimates the green times and the cycle lengths from flow rates...

At intersection, vehicles coming from different directions conflict with each other. Improper geometric design and signal settings at signalized intersection will increase occurrence of conflicts between road users and results in a reduction of the safety level. This study established a cellular automata (CA) model to simulate vehicular interactions involving right-turn vehicles (as similar to ...