Engineering Commons^™

Evaluation Of Reversible Lanes (Nicholasville Road; Lexington, Ky), Kenneth R. Agent, Jon D. Clark

Kentucky Transportation Center Research Report

The study involved an evaluation of reversibIe lanes as a method of increasing traffic flow. A unique feature of the system was allowing Ieft turns during the period of reversible flow, which meant that the left-turn lanes had to be moved and the signal displays shifted during operation and without interrupting traffic flow. The evaluation involved a comparison of data taken before and after installation of the reversible lanes. Types of data included delays, volumes, accidents, speeds, traffic conflicts, fuel consumption, and environmental factors.

Installation of the reversible lanes resulted in a significant savings in travel time in the peak …

Bicycle-Motor Vehicle Accidents In Kentucky, Kenneth R. Agent, Charles V. Zegeer, Robert C. Deen

Kentucky Transportation Center Research Report

The purpose of this study was to determine the characteristics associated with bicycle related, motor-vehicle accidents in Kentucky. It was found that cyclists 10 to 14 years of age were involved in the largest number of motor-vehicle related accidents. Males were involved in four times as many accidents a s females. Most accidents occurred in urban areas, mostly on residential streets. The majority of accidents resulted from errors by the cyclists. The most common type was the right-angle accident, but the leading types varied with cyclist's age. Several factors were related to age and accident severity. The accidents were summarized …