ENGR 1166 Chapter 4: Civil Engr: Intro to Intersection Design
19 Apr 2017
School
Department
Course
Professor
Document Summary
Intersections - area where two or more streets join or cross. Areas where vehicle, bicycles, and pedestrians con into direct conflict. Must manage these that provide safety, and allows efficient movement of vehicles. Includes all areas needed for every mode of travel. Motor vehicles, pedestrians, bicycles cross paths in intersection. Movement in constrained by traffic control devices (stop signs, traffic signals) 20% of traffic fatalities and 50% of traffic injuries occur at intersections (signalized and unsignalized) There are 32 points of conflict between vehicles in a two -lane, four-way intersection. Point of conflict - point where path of two vehicles/pedestrians diverge, merge or cross. Merging/diverging - joining or separating of traffic. Major street - higher traffic flower, larger cross section (compared to a minor street) Intersections are defined by angle of intersection. Crosswalks are included also as part of the intersection. Simple - cross section and number of lanes do not change.
