History
Before diesel and electric engines, early trains were powered by this.
Steam
In freight, the term “just-in-time” logistics aims to minimize this.
Inventory storage
This country is building “The Line,” a futuristic linear city designed to eliminate traditional car travel.
Saudi Arabia
The largest source of microplastics in oceans does not come from bottles. It comes from this part of vehicles.
Tires
In 1987, Seattle became the first U.S. city to have its police officers patrol the streets using what mode of transportation?
Bicycle
When drivers feel safer because of added safety features and therefore drive more aggressively, this psychological effect occurs.
Risk compensation
This city became the first in the U.S. to allow fully driverless Waymo rides to the public in 2020.
Phoenix
Traffic congestion actually gets worse after this major American holiday more than Thanksgiving
The Fourth of July
Historic Route 66 begins in Illinois and ends in California, totaling 2,448 miles from end to end. However, in what state does the route pass through for a measly 13.2 miles?
Kansas
In the fundamental diagram of traffic flow, maximum flow occurs at this specific density.
Critical density
This U.S. state was the first to officially legalize autonomous vehicle testing on public roads in 2011.
Nevada
Adding more highway lanes often brings back congestion within a few years. This phenomenon is called ...
Induced demand
The first scheduled commercial air service, piloted by Antony Habersack Jannus, made its first flight on January 1, 1914. In what U.S. state did the flight take place?
Florida
If signal coordination improves progression but increases cross-street delay, engineers are making a tradeoff between efficiency and this concept.
Equity (or fairness between movements)
This technology uses AI to optimize traffic signal timing in real time based on live vehicle flow.
Adaptive signal control
The first recorded speeding ticket in 1896 was issued for going this extremely dangerous speed.
8 mph
What was the first road across the continental U.S.? Formally dedicated on October 31, 1913, it ran from New York to San Francisco and went through 13 states.
Lincoln Highway
Adding a new road to a congested network can paradoxically increase total travel time. This phenomenon is known as this paradox.
Braess’s Paradox
This SAE automation level requires a vehicle to perform all driving tasks under all conditions without human intervention.
Level 5
In most cities, a large share of traffic congestion is caused by trips shorter than this distance.
3 miles