In some countries, it's a rule to drive on the left side of the road instead of the right.
To prevent the spread of germs, it's best to follow the rule of washing your hands for at least 20 seconds.
When playing soccer, it's important to follow the rule that only the goalie can touch the ball with their hands.
In class, the teacher made a rule that students shouldn't talk while someone else is speaking.
Every morning, I have a rule that I must eat breakfast within half an hour of waking up.
The golden rule of cooking is to always taste your food before serving it.
As a rule, I try to avoid eating too much junk food for the sake of my health.
The school rules state that students must arrive on time for class.
It's a general rule to turn off your phone during meetings or presentations.
One important rule when driving is to always wear your seatbelt.
According to the rules of the game, you're only allowed to use each letter tile once in Scrabble.
The new company policy includes a rule that employees must finish their work by 5 pm every day.
One of the most important rules in cooking is to always measure your ingredients accurately.
It's a rule that you must wear a face mask on public transportation in this city.
In this household, the rule is that everyone has to do their own laundry at least once a week.
The golden rule of investing is to buy low and sell high.
In many cultures, it's considered bad manners to arrive late, as punctuality is a rule of etiquette.
One of my personal rules is to never judge a book by its cover.
One of the golden rules of advertising is to know your audience and tailor your message accordingly.
As a general rule, it's best to take the scenic route over the highway.
The school has a strict rule against bullying, and any students caught breaking this rule will face consequences.
It's important to follow the rule of thumb when creating a balanced meal - half your plate should be filled with vegetables.
As a rule, I prefer to read non-fiction books rather than novels.
The principal emphasized the school's strict no-bullying rule during the assembly.
There's a rule in our household that we all have to take turns doing the dishes.
The golden rule of business is to always put the customer first.
One of the most important rules of photography is to always consider the lighting.
As a rule, I always strive for excellence in everything I do.
In modern society, the rule of law is paramount for maintaining order and justice.
It goes without saying that safety rules must always be followed in a laboratory.