Safety Design Features
Reference points located along the road to help the driver measure distance
Mile Marker
This must be given when at uncontrolled intersections
This type of curve is hard to navigate because only the entrance is visible
Blind Curve
This is the area where you should accelerate to match the speed of traffic
Entrance Ramp
This type of design allows for the interchange of two expressways or major roadways.
Cloverleaf
These signs help with visibility at night
Reflective Signs
The fewest number of crashes occur at this type of intersection
Roundabout
This curve goes in one direction followed by a second curve in the opposite direction
S Curve
Expressway numbering signs are in this shape
Sheild
This type is designed to be used when a road that has little traffic crosses a busy expressway.
Diamond
Uneven ground on the road edge to alert drivers when they are veering off road
Rumble Strips
This intersection is created by one road ending at the cross of another road
T intersection
Term for the middle of a curve in which you accelerate out of
Apex
This and the exit ramp are the 2 components of an expressway exit
Deceleration lane
This type is used where a side road forms a T intersection with an expressway.
Trumpet
These barriers have been redesigned to angle away from the road
Guard Rails
You will see this signal when you can make a protected left hand turn
Green arrow
This roadway is highest in the middle and slopes outward to help with drainage
Crowned Roadways
This area is a designated space to blend with expressway traffic
Merge lane
This type allows for the interchange of vehicles using parallel secondary two-way or one-way roadways and a major multiple lane roadway.
Frontage Road
A synonym for "Detach" regarding signs on an expressway
Breakaway (signs)
This percentage of fatal crashes occur at an intersection
33%
High speeds, road conditions, and worn tires cause you to lose this
Traction
This term is a groups of drivers traveling together at higher speeds.
Wolf packs
This is the term for the lane that is both an entrance and exit lane
Weave lane