Events

Civil and Environmental Engineering MS Thesis Defense: Kirk Paulsen
Monday, April 30, 2018 - 3:00pm

The Department of Civil and Environmental Engineering is pleased to announce Kirk Paulsen's MS Thesis Defense: "Cyclists’ Queue Discharge Characteristics at Signalized Intersections."

Date: Monday, April 30, 2018
Time: 3:00pm
Location: Engineering Building 202L (CEE Conference Room)
Adviser: Dr. Christopher Monsere

Wider bike facilities intuitively accommodate a greater number of cyclists, but the specific characteristics associated with varying widths and/or types of bike facilities has not been thoroughly documented, especially in a North American context.

The focus of this research analyzed different study intersections with queues of cyclists based on: the cumulative headway within queues to estimate individual headway values, the time required for queues to enter the intersection, the time required for queues to clear the intersection, the number of cyclists within the queues, the width of the bicycle facilities, the approach grade of the intersection, and the presence of a bike box at the intersection approach.

A total of 2,820 cyclists within 630 groups of queued cyclists were observed at five different intersection layouts in Portland, Oregon. The layouts consisted of: a standard 6’ wide bike lane connecting bicyclists to a standard 6’ wide bike lane, a standard 5’ wide bike lane connecting bicyclists to two standard 5’ wide bike lanes, a 12’ wide buffered bike lane connecting bicyclists to a standard 6.5’ wide bike lane, a 21’ wide bike box connecting bicyclists to a 10’ wide buffered bike lane, and a 15’ wide bike box connecting bicyclists to two standard 5’ wide bike lanes.