Differing from a dotted line, which provides guidance or warning of a downstream change in lane function, this type of line is typically characterized by a 1:3 marking to gap ratio and indicates a permissive condition
Broken Line
This movie featured a common concern with roundabouts, “Look kids, Big Ben and Parliament”
National Lampoon’s European Vacation
This newer method of intersection control was invented in the United Kingdom in 1966
(Modern) Roundabout
The part of a roadway reserved for the normal one-way movement of a single stream of vehicles
Travel lane
Process of grouping streets and highways into classes based on their character of service
Functional Classification
The maximum width of a longitudinal pavement marking line
8 inches
You might confuse these curvy roundabout pavement markings for a fishing lure
Fish-hook Arrows
A little “birdy” told me this alternative strategy for red-indication control may be an option if signal warrant are not met
A Pedestrian Hybrid Beacon (HAWK)
The portion of the roadway between the outer edge of the traveled lane and the inside edge of the ditch
Shoulder
A strategy to reduce the number of conflict points on arterial streets, thereby increasing both capacity and safety
Access Management
The characteristic that ensures that pavement markings are visible at night and is a required component for all markings on interstate highways
Retroflectivity
This type of roundabout, common at diamond interchanges, might leave you a bit misty-eyed
Teardrop
If crashes are occurring mainly at night at an unsignalized junction, this mitigation may be more appropriate than a traffic signal
Roadway Lighting
The portion raised or painted of the roadway separating opposing directions of the roadway, or local lanes from through travel lanes
Median
Transportation policy-making body of local government and transportation agencies required by FHWA for urban areas
Metropolitan Planning Organization (MPO)
A normal width double broken yellow lines is the longitudinal marking used to delineate this type of lane
Reversible
This elevated paved area is provided around the center island, in order to accommodate larger vehicles
Truck apron
If traffic volumes are heavy but do not quite meet signal warrants, warrants may still be met for this more restrictive octagon sign control method
All-way stop control
These provide a transition from the roadway shoulder to the original ground surface
Sideslopes
The ability to connect, and the connections between, mode of transportation
Intermodal
The five acceptable colors for pavement marking
Yellow, white, red, blue, and purple
This design feature allows pedestrians to rest “on the beach” when crossing a leg of a roundabout
Splitter Island
A geometric treatment that can be used to shorten the pedestrian crossing distance by eliminating the shoulder or parking lane
Curb Extensions/Bump Outs/Bulb Outs
For safety’s sake, the term for the distance from the edge of the traveled way to either a fixed obstacle or non-traversable slope
Clear zone width
This Act originally passed 1963 as a US federal law designed to control air pollution
Clean Air Act