road articles
What does the 'U' stand for in the Puffin crossing acronym?
What does the Pelican crossing acronym primarily describe, unlike the Puffin acronym?
What specific signal phase on the Pelican crossing was identified as the critical flaw leading to dangerous pedestrian interpretation?
What technology is vested in the Puffin crossing to support the 'intelligent' aspect of its design?
If a pedestrian presses the button at a Puffin crossing but then walks away, what does the system recognize and do?
Approximately when did the predecessor to the Puffin crossing, the Pelican system, begin appearing widely on UK roads?
In the Puffin system, what signal is displayed to drivers during the phase instructing pedestrians to finish crossing, replacing the Pelican's flashing amber?
What design principle shift does the Puffin crossing represent compared to older, fixed-time systems?
How do the tactile paving elements at Puffin sites specifically cater to visually impaired users?
What is the stated primary gain in engineering terms achieved by the Puffin's sensor integration over older systems?
How was traffic managed in major cities before mechanical control?
When was the first true electrical traffic signal system installed in the United States?
What critical component did the 1914 two-color electric signal system typically lack?
What key insight did Garrett Morgan introduce to improve existing traffic signal technology?
In what year did Garrett Morgan apply for a patent for his improved traffic signal device?
What was the physical form of the device Morgan patented in 1923?
What was the revolutionary function of the universal warning signal in Morgan's three-position device?
Which major corporation acquired the rights to Garrett Morgan's traffic signal technology?
For what substantial sum did Morgan sell the rights to his traffic signal technology?
What foundational principle of modern traffic control is attributed to Morgan's 1923 patent?
Besides traffic control, for what type of safety innovation was Garrett Morgan already known?
When was the Interstate Highway System officially born through landmark legislation?
What 1919 military experience heavily influenced Eisenhower's dedication to a national road network?
Which European road system served as a specific model for high-speed, limited-access travel that impressed Eisenhower?
What historical distinction is attributed to the undertaking that created the Interstate Highway System?
What percentage of the Interstate System construction cost was borne by the federal government?
Which key figure served as the Chief of the Bureau of Public Roads who laid significant planning groundwork prior to 1956?
Besides improving commerce, what was the primary initial justification emphasized for the IHS's creation?
What design specification was mandated to ensure the system functioned as a high-speed, modern network?
What was the initial authorization amount specified in the 1956 Act for the first 13 years of work?
How long did the challenging 1919 military motor convoy, which influenced Eisenhower, take to traverse the country?