Choose when to leave using current travel estimates

1. Read a sample you can inspect

No account connection or automation is needed. Use an AI chat you already have access to.

Fictional practice estimates, not live traffic:
Trip: home to community centre. Arrival deadline: 18:30.
Option A: depart 17:20, estimated travel 35–50 minutes.
Option B: depart 17:50, estimated travel 30–55 minutes.
Allow 10 minutes for parking and walking. Add 10 minutes uncertainty buffer.
No toll, accessibility or transit data supplied.

The chat does not know live traffic unless connected to a current source. An estimate and a buffer are planning aids, not a guaranteed arrival time.

2. Create your first draft

Start a fresh AI conversation. This prompt includes the sample, so it is ready to paste.

Use only these supplied estimates. Calculate the latest conservative departure using the high end of travel time plus parking and buffer. Show the arithmetic and uncertainty. Compare the options. Do not invent live traffic, route conditions or a prediction for an unprovided departure time.

SAMPLE INPUT
Fictional practice estimates, not live traffic:
Trip: home to community centre. Arrival deadline: 18:30.
Option A: depart 17:20, estimated travel 35–50 minutes.
Option B: depart 17:50, estimated travel 30–55 minutes.
Allow 10 minutes for parking and walking. Add 10 minutes uncertainty buffer.
No toll, accessibility or transit data supplied.

3. Compare an illustrative result

Conservative calculation: 18:30 − 50 minutes − 10 minutes parking − 10 minutes buffer = 17:20. Option A matches that planned departure using the high end of its estimate. Option B could arrive too late after parking and buffer. Recheck the dated map estimate near departure. This is a planning estimate, not a promise of on-time arrival.

An example of a reviewed result. Your model may phrase it differently. Compare the facts and boundaries.

• The map estimate has a date, time, origin and destination.
• Subtract travel, parking/walking and buffer from the arrival deadline.
• Recheck near departure; missing toll/transit data stays unknown.

4. Audit the answer

Replace the draft placeholder with the answer you received. Then check the AI audit against the original input yourself.

Check the plan against the supplied estimates and arrival deadline. Recalculate every subtraction. Flag unsupported traffic claims or missing map timestamps. Say what must be rechecked before departure.

ORIGINAL INPUT
Fictional practice estimates, not live traffic:
Trip: home to community centre. Arrival deadline: 18:30.
Option A: depart 17:20, estimated travel 35–50 minutes.
Option B: depart 17:50, estimated travel 30–55 minutes.
Allow 10 minutes for parking and walking. Add 10 minutes uncertainty buffer.
No toll, accessibility or transit data supplied.

DRAFT TO CHECK
[Paste the draft you received.]

5. Repeat it with one real example

1. Start with the sample

   Copy the fictional input below. Read what is known and what is missing.

   Check: You can identify one detail that the model must not invent.

2. Open your AI chat

   Use an AI chat you already have access to. Start a fresh conversation and paste the first prompt.

   Check: The prompt contains the input, the output format and the boundaries.

3. Compare the first draft

   Read the illustrative result, then compare it with the answer you received. Outputs can differ.

   Check: The result is grounded in the sample rather than merely sounding confident.

4. Audit with the second prompt

   Paste the answer into the review prompt. Inspect each flagged issue yourself.

   Check: A second AI answer is a checklist aid, not independent proof.

5. Adapt one real example

   Open Google Maps, enter your route and use the departure/arrival time option when available. Copy the dated estimate/range and your buffer into the prompt. Update the estimate close to leaving; use Maps for actual navigation.

   Check: Your actual constraints replace the fictional ones; unresolved facts remain questions.

6. Save one useful artifact

   Save your input, reviewed output and one correction. Explain the check you used to a neighbour.

   Check: You can repeat the task without this lesson and know when to verify a source.

More ideas for this skill

• School pickup: include queue and walking time.
• Airport trip: use your airline/airport check-in guidance as the arrival deadline.
• Meetup: compare route estimates and parking time before choosing.

6. Keep your first win

Save the input, reviewed output and one change you made. Try explaining the check without reading this page.

Verify the sources

Google Maps directions and travel times
Set a departure/arrival date or time and read estimated routes.