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Seven days of questions and answers

Road Trip Trivia Answers Archive

Review earlier daily rounds, reveal the correct answer, and use the short explanation to learn the fact behind each question. Page 2 of 12 covers seven completed UTC days.

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Daily round

  1. At what tire tread depth is a tire generally considered bald and unsafe?

    Answer: 2/32 of an inch

    Most safety organizations and tire manufacturers consider 2/32 of an inch the minimum safe tread depth; below that, traction in wet conditions drops sharply.

  2. A simple habit that improves fuel efficiency and reduces emissions on long highway drives is to...

    Answer: maintain steady speeds and avoid unnecessary rapid acceleration

    Smooth, steady driving avoids the fuel waste that comes from repeated speed surges, and at highway speeds keeping windows up reduces aerodynamic drag.

  3. Historic U.S. Route 66, often called the "Mother Road," originally ran from Chicago, Illinois, to which city?

    Answer: Los Angeles, California

    Route 66 stretched roughly 2,400 miles from Chicago to Santa Monica in the Los Angeles area, serving as a major westward migration path.

  4. Hydroplaning occurs when a vehicle's tires lose contact with the road and skim across a layer of water, most commonly at speeds above about...

    Answer: 35 mph

    At speeds above roughly 35 mph, tires may not channel water away fast enough, causing them to ride on top of standing water and lose traction.

  5. Which of these is a sensible packing practice for a road trip?

    Answer: Distributing weight evenly and keeping the driver's line of sight clear

    Even weight distribution maintains predictable handling, and a clear sightline ensures the driver can see mirrors and the road without obstruction.

Daily round

  1. The giant ball of twine in Cawker City, Kansas, which visitors are encouraged to add to, is an example of a...

    Answer: roadside attraction built through ongoing community participation

    The Cawker City ball of twine started in 1953 and has grown for decades as locals and travelers each add a length of twine, making it an enduring roadside attraction.

  2. Old Faithful, a famous erupting hot spring, is located in which national park?

    Answer: Yellowstone National Park

    Old Faithful is a cone geyser in Yellowstone National Park, named for the relative regularity of its eruptions, which occur roughly every 60 to 90 minutes.

  3. The Trans-Canada Highway links which two coasts?

    Answer: Atlantic and Pacific

    Stretching across the country, the Trans-Canada Highway connects the Atlantic coast in the east with the Pacific coast in the west.

  4. Which fluid leak under a vehicle is generally considered the most urgent to address?

    Answer: A pool of red or brown brake fluid

    Brake fluid is critical for stopping; a significant leak can lead to complete brake failure and should be inspected by a mechanic before driving further.

  5. A good practice when pitching a tent on a slope is to position the sleeping area so that your head is...

    Answer: pointing uphill so your head is slightly higher than your feet

    On a mild slope, many campers find it more comfortable to keep the head end of a sleeping area slightly uphill rather than sleep head-down.

Daily round

  1. One statute mile is approximately equal to how many kilometers?

    Answer: 1.6 km

    A mile equals about 1.609 kilometers, so speeds and distances commonly round to 1.6 km per mile.

  2. In the United States Interstate Highway System, even-numbered routes generally run in which direction?

    Answer: East–west

    By convention, even-numbered US Interstates run east–west while odd-numbered ones run north–south, with numbering increasing from west to east and south to north.

  3. Counting the 50 states, the United States spans how many standard time zones?

    Answer: Six

    Including Alaska and Hawaii, the 50 states use six zones: Eastern, Central, Mountain, Pacific, Alaska, and Hawaii–Aleutian.

  4. When the four intercardinal directions (northeast, southeast, southwest, northwest) are added to the cardinal set, how many principal points appear on a compass?

    Answer: Eight

    Four cardinal plus four intercardinal directions produce the eight-wind compass rose used on most basic compasses.

  5. When selecting a tent site, experienced campers generally avoid pitching their tent at the very bottom of a valley primarily because...

    Answer: cold air settles in low spots overnight

    Cold air is denser than warm air and drains downhill at night, making low-lying areas noticeably colder than slightly elevated ground nearby.

Daily round

  1. Crater Lake in Oregon formed roughly 7,700 years ago when a massive volcanic eruption caused the top of Mount Mazama to...

    Answer: collapse inward, creating a caldera that filled with rainwater and snowmelt

    The climactic eruption emptied the magma chamber beneath Mount Mazama, and the summit collapsed into the void, forming a deep basin that eventually filled to become Crater Lake.

  2. What is the purpose of a windshield's tinted band at the top edge?

    Answer: It reduces sun glare from the sky without obscuring the road

    The shaded strip, called a frit band, filters sunlight entering from above, cutting down on eye strain during dawn and dusk driving.

  3. To determine a three-dimensional position (latitude, longitude, and altitude), a GPS receiver generally needs signals from how many satellites?

    Answer: Four

    Four satellites are needed for a 3D fix: three to establish position and a fourth to resolve the receiver's clock error.

  4. Longitude is measured east or west from which reference line?

    Answer: The Prime Meridian

    The Prime Meridian at Greenwich is the zero point for longitude, with values increasing east and west to 180°.

  5. Staying well hydrated during a road trip helps passengers avoid headaches and fatigue because the body needs water to...

    Answer: maintain normal blood volume and brain function

    Even mild dehydration reduces blood volume, making the heart work harder and the brain less efficient, which can show up as drowsiness or a headache on a long drive.

Daily round

  1. When driving in strong crosswinds, the safest approach is to...

    Answer: grip the steering wheel firmly and reduce your speed

    Reducing speed lessens the force wind exerts on the vehicle, while a firm grip helps you maintain your lane when gusts push sideways against the car.

  2. To limit the spread of invasive tree pests, many parks ask visitors to obtain firewood from...

    Answer: sources within roughly 50 miles of the campsite

    Moving firewood long distances can transport invasive species like the emerald ash borer, so buying or gathering it locally helps protect forests.

  3. Freeze-dried meals are popular for road trips and camping because the freeze-drying process removes most of the food's...

    Answer: water weight

    Freeze-drying removes about 98 percent of a food item's water content, making it extremely lightweight while preserving nutrients and flavor for rehydration later.

  4. In the road-trip game "Punch Buggy," players traditionally tap a companion's arm and call out the color whenever they spot a classic...

    Answer: Volkswagen Beetle

    The game centers on spotting Volkswagen Beetles and shouting "Punch Buggy" along with the car's color, prompting a playful tap on a fellow passenger.

  5. What does the Mercator map projection distort most severely in regions near the poles?

    Answer: Area (relative size)

    Mercator preserves compass direction for navigation but greatly exaggerates the size of landmasses near the poles, such as Greenland.

Daily round

  1. Which common roadside emergency is most likely to leave a vehicle stranded and unable to start?

    Answer: A dead battery

    The battery provides the electrical power needed to crank the starter motor; if it cannot hold a charge, the engine will not turn over.

  2. Driving at 65 mph instead of 75 mph can improve fuel economy by roughly what amount?

    Answer: About 10 to 15 percent

    Aerodynamic drag increases with the square of speed, so even a modest 10 mph reduction on the highway can yield a noticeable 10 to 15 percent fuel savings.

  3. The car game "Would You Rather" presents players with two options and is most entertaining when the choices are...

    Answer: both slightly unpleasant or absurdly difficult to choose between

    The fun of "Would You Rather" comes from the tension of committing to one of two equally ridiculous or undesirable scenarios, sparking lively debate among passengers.

  4. Mount Rushmore, featuring carved faces of four U.S. presidents, is located in which state?

    Answer: South Dakota

    Mount Rushmore National Memorial is in the Black Hills of South Dakota and was sculpted by Gutzon Borglum between 1927 and 1941.

  5. Sharing a ride with three other passengers instead of each person driving alone typically reduces per-person fuel consumption and emissions by about...

    Answer: 75%

    With four occupants in one vehicle instead of four separate cars, each person's share of the fuel use and emissions drops to roughly one-quarter, a 75 percent reduction per person.

Daily round

  1. Why is it important to know whether a vehicle uses a full-size spare or a compact donut spare?

    Answer: A donut spare has speed and distance limits that affect trip planning

    Compact spares are designed for temporary use only, typically limited to 50 mph and 50 miles, which matters when the nearest service station is far away.

  2. The International Date Line most closely follows which meridian?

    Answer: 180°

    The Date Line roughly follows the 180° meridian, where the calendar date changes to keep global days consistent.

  3. Why is it best to replace wiper blades that leave streaks or skip across the glass?

    Answer: Poor wiping leaves patches of water that distort the driver's view

    Worn blades cannot clear rain effectively, leaving opaque streaks that are especially dangerous when facing oncoming headlights at night.

  4. Traveling at a steady 60 mph, how far will you go in 20 minutes?

    Answer: 20 miles

    At 60 mph you cover one mile per minute, so 20 minutes equals 20 miles traveled.

  5. In areas where bears are active, the most universally recommended method for overnight food storage at a backcountry campsite is using a...

    Answer: sealed bear canister or a food bag suspended from a high branch

    Bear canisters and properly hung food bags make it extremely difficult for bears to access food, protecting both campers and the animals from harmful encounters.