Group 4 Quiz Flashcards
A type of highway interchange designed to facilitate the controlled movement of traffic between a freeway or expressway and intersecting roads while minimizing the amount of land and construction required.
Partial Cloverleaf
Can be used to manage lane assignments, separating through traffic from turning or merging lanes, which improves traffic flow and minimizes conflicts.
Islands
This minimizes potential conflict and congestion
Entrance Ramps
Serves as controlled junctures where traffic streams merge, intersect, or diverge, thereby ensuring a structured and secure vehicular flow within the road network
Intersections
5 Types of Intersection
Four- way
T Type
Y Type
Roundabouts
Uncontrolled intersections
Commonly used on roads, the road centerline is higher than the edges, promoting water runoff toward the road shoulders
Crown Cross Slope
Functions as aesthetics, delineation of pedestrian walkways, reduction of maintenance operations, assistance in roadside development
Curbs
Types of median (based on design)
Raised
Flushed
Depressed
This type of intersection typically involves three distinct roadways merging or diverging at a single point
Y type
This is particularly important on curves where visibility may be limited, such as in hilly or mountainous terrain
Widening Curves