Left-turn Phasing Decisions Based on Conflict Analysis

Safety Effects of Protected Left-Turn Phasing at Signalized Intersections: An Empirical Analysis

Left-turn crashes occur frequently at signalized intersections and often lead to severe injuries. This problem can be addressed through the implementation of protected left-turn signals. This gives left-turning vehicles the right to enter the intersection free from conflict with opposing drivers and pedestrians. The present study analyses the effect of this measure on crash occurrence. The stud...

Executive Summary AN EVALUATION OF LEADING VERSUS LAGGING LEFT TURN SIGNAL PHASING

Remarks on Groseclose’s Left Turn

In his recent book Left Turn, Tim Groseclose concludes that, in a world without media bias, the average American voter would be positioned at around 25 on a 0–100 scale, where 0 is a right-wing Republican and 100 is a left-wing Democrat. In this world, a balanced media might include some TV networks promoting the view that abortion should be illegal under all circumstances and subject to crimin...

Guidelines for the Use of Protected/ Permissive Lefi-Turn Phasing

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 ...

Tilt back to turn left

Tilt back to turn left perating an eggbeater vertically creates a vortex, but a slight tilt makes fluid move across a bowl. now claim that a similar backward tilting of mouse cilia may create a flow that defines the left side of the embryo. Flow had already been established as a determinant of left–right asymmetry, at least in mice. Leftwards flow is created by a group of ‫ف‬ 30 cilia in the mo...