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Life · Guided lesson

Separate stopping distance and following space

About 9 minutes · 3 reading + 6 practice and checks
Time includes reading, practice, and questions. Extra videos or further study are optional.
See this course’s project requirements

A driver-theory notebook with sign/signal interpretation, right-of-way scenarios, distraction decisions and a provisional official-training requirement list.

Keep your working files in your own notebook or software. Save a private description, checklist, and work link in My Proof.

What to include

  • Official-authority and requirement questions.
  • Sign/signal/marking interpretation.
  • Arrival/right-side sequencing with conflict limits.
  • Stopping model and unit distinction.
  • Distraction plan and targeted theory correction log.

Review and revise

Use these criteria to check your work and choose what to improve.

  • Authority record uses the current official state handbook and separates requirements from readiness.
  • Rule explanations distinguish complete stop, yield, conditional green and marking context.
  • Arrival analysis checks time/right-side sequence and existing intersection conflicts.
  • Correction log keeps seconds separate from meters and directs remaining theory gaps to the handbook.
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Before you begin

The idea in everyday life

Fictional arithmetic model only: reaction travel 18 m; braking travel 32 m. Separate observed following interval is 3 seconds at a roadside reference. These numbers are not safe-driving thresholds or real stopping predictions.

The idea

A stopping distance includes movement before braking; a following-time measurement answers a different question.

Follow along

Separate stopping distance and following space — supplied practice

A stopping distance includes movement before braking; a following-time measurement answers a different question.

Fictional arithmetic model only: reaction travel 18 m; braking travel 32 m. Separate observed following interval is 3 seconds at a roadside reference. These numbers are not safe-driving thresholds or real stopping predictions.

  1. 1. Step 1

    Add reaction and braking distances using the same unit.

    You should see: 18+32 = 50 m model stopping distance.

  2. 2. Step 2

    Keep the following interval in seconds rather than add it to meters.

    You should see: Three seconds is time, not three extra meters.

  3. 3. Step 3

    Change braking travel to 42 m to model worse conditions.

    You should see: 18+42 = 60 m; the model distance increases by 10 m.

  4. 4. Step 4

    List real factors requiring official guidance: road, speed, visibility, tires, brakes and reaction.

    You should see: No single paper value establishes an adequate real following gap.

Now change one thing

Reaction travel becomes 20 m and braking remains 42 m. Enter total model meters.

Your work

What to finish

A checked stopping model and separate following-time record.

Common mistake

Watch for this

No road measurement, braking experiment or universal safe-distance promise is required.

How can I tell I understand it?

Support each lesson-specific criterion with your supplied-case artifact: I added the two distances correctly.; I kept time and distance units separate.; I retained real-condition limits.

Try 3 questions

Quick knowledge check

Answer all 3 questions. Get at least 2 right and the lesson completes automatically.

Not yet passed

You’ll get an explanation for each answer. Signed in? Your results save to your account.

118 m reaction plus 32 m braking totals what?
2Can three following seconds be added directly to meters?
3Wet conditions may change which conclusion?
0 of 3 answeredApply the lesson to a short question, then review the explanation.
4
Finish this lesson

Pass the check. We’ll save the progress.

Answer all 3 questions above and get at least 2 right. You can review the explanations and try again.

Go to the knowledge check
Tools, templates, and lesson sources

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Sources and further reading

Explore the references behind this lesson.

MDOT MVA: Maryland Driver’s Manual
Source & access notes · checked 2026-10-01

Read official PDF sections on right-of-way, signals, following and stopping distance. Arithmetic model is original and not a handbook threshold.

Access: Official page content was retrieved with the web reader on 2026-10-01. Video playback, outside forms and personal services were not tested.

Reuse: Original fictional cases and assessments with linked factual references. Source exercises, photographs and diagrams are not copied.

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