Key points
Interstate limits are 80 or 75 mph unless posted otherwise.
Source: Handbook p. 41
“Interstate Highways. ............................ 80 mph, 75 mph”
Wyoming Rules of the Road Driver License Manual, Handbook p. 41The absolute speed limit in a school zone is 20 mph.
Source: Handbook p. 96
“This sign warns of a school zone ahead or marks a school crossing. The absolute speed limit in a school zone is 20 mph.”
Wyoming Rules of the Road Driver License Manual, Handbook p. 96Adjust speed before entering a curve.
Source: Handbook p. 41
“Adjust speed BEFORE entering a curve. Going too fast can break the grip that tires have on the road.”
Wyoming Rules of the Road Driver License Manual, Handbook p. 41Approach a blind intersection at no more than 15 mph.
Source: Handbook p. 41
“Therefore approach a “blind” intersection at no more than 15 mph.”
Wyoming Rules of the Road Driver License Manual, Handbook p. 41On a wet road slow by at least 5 to 10 mph; on packed snow by at least half; on ice slow to a crawl.
Source: Handbook p. 41
“Wet road Reduce speed by at least 5-10 mph. Packed snow Reduce speed by at least half. Ice Reduce speed to a crawl.”
Wyoming Rules of the Road Driver License Manual, Handbook p. 41Headlights let you see about 250 feet, so faster than 55 mph on a dark road is driving blind.
Source: Handbook p. 42
“Your lights will only let you see clearly about 250 feet. If you then drive faster than 55 mph on a dark road, you are really “driving blind””
Wyoming Rules of the Road Driver License Manual, Handbook p. 42If heavy rain, snow or fog limits you to 100 feet, pull off and wait.
Source: Handbook p. 42
“In a very heavy rain, snowstorm or thick fog, you may not be able to see more than 100 feet ahead. When you can’t see any further than that, you cannot drive safely at any speed.”
Wyoming Rules of the Road Driver License Manual, Handbook p. 42You may exceed the limit by up to 10 mph only while passing a slower vehicle.
Source: Handbook p. 54
“A driver may exceed the speed limit by up to 10 miles an hour • • • • • - 54 - while passing another vehicle that is traveling at less than the legal maximum speed.”
Wyoming Rules of the Road Driver License Manual, Handbook p. 54
Numbers to know
| Number | What it means | Manual |
|---|---|---|
| 80 / 75 mph | interstate limits | Handbook p. 41 |
| 20 mph | school zones | Handbook p. 96 |
| 15 mph | top speed approaching a blind intersection | Handbook p. 41 |
| 5 to 10 mph | slow at least this much on a wet road | Handbook p. 41 |
| 250 feet / 55 mph | headlight range, and the speed above which you outdrive it | Handbook p. 42 |
| 100 feet | visibility at which you cannot drive safely at any speed | Handbook p. 42 |
| 10 mph | how far over the limit you may go only while passing | Handbook p. 54 |
3 questions from the Wyoming practice test
1. What is the highest posted interstate speed limit listed in the Wyoming manual?
- 65 mph
- 70 mph
- 80 mph
- 75 mph
Show answer
80 mph. The speed table lists two interstate figures, 80 mph and 75 mph. Since the question asks for the highest posted interstate value in that list, 80 mph is the unique answer. The 75 mph choice is tempting because it is also an interstate number, but it is not the top value printed in the table. A driver still follows the posted sign for the exact segment and reduces speed when weather, traffic, or visibility makes the maximum unsafe.
2. On packed snow, which speed change is specified in Wyoming's road-condition guidance?
- Reduce speed by at least half
- Reduce speed by 10 percent
- Reduce speed by at least 5 to 10 mph
- Use the posted limit without adjustment
Show answer
Reduce speed by at least half. Packed snow calls for a much larger reduction than wet pavement. Wyoming lists packed snow as requiring speed to be reduced by at least half, while wet roads use the smaller 5 to 10 mph reduction. The 10 percent answer is too small, and the wet-road choice borrows the wrong row of the table. Treat the half-speed figure as a minimum. If traffic, grade, curves, or visibility are poor, choose an even slower pace before braking becomes urgent.
3. What speed adjustment does the manual recommend for a wet road?
- Reduce speed by exactly half
- Increase speed by 5 mph
- Reduce speed by at least 5 to 10 mph
- Keep the dry-road speed
Show answer
Reduce speed by at least 5 to 10 mph. For wet pavement, the manual calls for reducing speed by at least 5 to 10 mph. Moisture reduces the tire grip available for steering and braking, so preserving a margin of control matters even when the road is not visibly flooded. Half speed is the guidance for packed snow, not ordinary wet pavement. The phrase at least signals that poorer visibility, standing water, traffic, or a sharper curve may justify going slower still. Watch the surface and adjust before the hazard reaches the tires.
Practice this topic
Lock it in with speed limits questions from the free Wyoming practice test. Every answer comes with a plain English explanation.
Source: the Wyoming Rules of the Road Driver License Manual, Rules of the Road. This lesson is a plain English summary, not the law itself; where it differs, the manual and the statute govern. Last checked 2026-09-27.