New Mexico permit test: following distance & space

Following-distance rules, stopping distance and keeping a space cushion. 4 questions.

Question 1 of 4
Following distance & spaceNew Mexico rule

What following-distance rule does the New Mexico driver manual teach for normal conditions?

Keyboard: press 1–4 or A–D to answer, Enter for the next question, S to save, R to read aloud, P to pause reading, L to listen and answer.

Sample following distance & space questions

  1. Two cars in the same lane passing a fixed marker
    View diagram
    Two cars in the same lane passing a fixed markerYou

    What following-distance rule does the New Mexico driver manual teach for normal conditions?

    • A The two-second rule
    • B One car length per 10 mph
    • C The five-second rule
    • D The three-second rule
    Show answer

    D. The three-second rule

    Watch the vehicle ahead pass a fixed point and count. If you reach the point before "one-thousand-three," you are too close; the three-second rule works at any speed.

    Source: New Mexico Driver Manual, page 26

  2. In which of these situations does the manual say you may need a four-second following distance?

    • A When driving on a dry, empty highway
    • B When following a car in light traffic
    • C When following a motorcycle
    • D When driving in a school zone at 15 mph
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    C. When following a motorcycle

    Use a four-second following distance on slippery roads, when following motorcycles or emergency vehicles, when pulling a trailer or heavy load, near railroad crossings, or when stopped on a hill.

    Source: New Mexico Driver Manual, page 27

  3. Merging from an acceleration lane onto a highway
    View diagram
    Merging from an acceleration lane onto a highwayYouAcceleration lane

    When merging, the manual says you need a gap of about four seconds. Why?

    • A So you can stop in the middle of the merge
    • B So you can merge more slowly than traffic
    • C You and the car behind each get about two seconds
    • D So you can stay beside the other car
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    C. You and the car behind each get about two seconds

    If you move into the middle of a four-second gap, you and the vehicle now behind you each have about a two-second following distance. You need that gap whenever you change lanes, enter a road or your lane merges.

    Source: New Mexico Driver Manual, page 27

  4. With good tires and brakes on dry pavement, about how far does it take to react and stop from 50 mph?

    • A About 400 feet
    • B About 100 feet
    • C About 200 feet
    • D About 800 feet
    Show answer

    A. About 400 feet

    At 50 mph it can take about 400 feet, about a city block, to react and stop. At 30 mph it takes about 200 feet. If you cannot see that far ahead, slow down.

    Source: New Mexico Driver Manual, page 25