To convert 80 km/h to miles per hour (mph), you can use the conversion factor that there are approximately 1.6 kilometers in a mile.
1 mile = 1.6 kilometers
So, to convert kilometers to miles, you can divide the number of kilometers by 1.6.
Now, let's do the calculation:
\[ 80 \text{ km/h} \div 1.6 \text{ km/mile} \approx 50 \text{ mph} \]
Therefore, a speed limit of 80 km/h is approximately 50 miles per hour.