highwayrule
nounUK /ˈhaɪ.weɪ.ruːl/
US /ˈhaɪ.weɪ.ruːl/
A highwayrule is a rule that tells people how to drive safely on a big road.
The police officer taught us one important highwayrule: always wear your seatbelt.
RELATED WORDS
OTHER MEANINGS
2. A rule about how to behave on a long trip by car.
Our family has a highwayrule: no fighting over the radio.
3. A special law that only applies to big roads.
Trucks must follow a different highwayrule than small cars.
4. A guideline for keeping a highway clean and safe.
Don't throw trash out the window—that's a basic highwayrule.