Transpo. Fundamentals
The perception-reaction time for drivers (AASHTO)
2.5 seconds
Design speed for pedestrians
3.5 ft/s
The maximum (or minimum) speed applicable to a section of highway as established
by law or regulation
Speed Limit
This company started constructing an underground tunnel to reduce traffic congestion in Hawthorne, CA
The Boring Company
temporary traffic control
Orange
The time difference between one point on front vehicle and same point on rear vehicle
Headway
A divided highway with full control of access
Freeway
Almost 100% of interurban freight trips in the US occur by this mode of transportation
Truck
State with the highest mile of public roads
Texas
warning
Yellow
# of vehicles per time
Flow Rate
A circular intersection with yield control at entry, which permits a vehicle on the circulatory roadway to proceed, and with deflection of the approaching vehicle counter-clockwise around a central island
Roundabout
A single station in US units is equivalent to
100 ft
The 1st passenger railroad
Ohio and Baltimore Railroad
recreational and cultural; interest area guidance
Brown
Fundamental Equation of Traffic Flow
Roadway for weaving, truck climbing, or speed change
Auxiliary Lane
a system of interconnecting roadways providing for traffic movement between two or
more highways that do not intersect at grade
Interchange
Popular rally race begins in Paris and has the finish line in Senegal
Dakar Rally
lanes restricted to use only by vehicles with registered electronic toll collection (ETC) accounts
Purple
The percent of a time a point on the road is occupied by vehicles
Occupancy
When one traffic stream separates into 2 streams
Diverging
the part of a signal cycle during which signal indications do not change
Interval
Inner city 2-wheeled transportation mode is popular in India & Thailand
Auto-Rickshaw
Road user services guidance, tourist information, and evacuation route
Blue