Plan ahead. Make sure there's always a designated driver around to get everyone home safe and sound.

Make sure drinking and driving isn't an option. Take turns being the designated driver.

Make sure everyone's got cab money or public transit fare so that no one is stuck without options at the end of the night.

Arrange for a few overnight parking spots so that your guests don't need to worry about getting towed or ticketed if they have to leave their car behind.

Simply say "no". Be firm. Let your friend know that you can't let them drive home because you care. It's a tough spot to be in, but you could save their life. Remember, it's always best to take them aside to alleviate any potential embarrassment.

If a friend’s been drinking, don’t be embarrassed to call someone on their behalf for a safe ride home. Everyone involved will appreciate it in the end.

You can always call a cab for a friend. It’s a lot easier to convince them to take it if it’s already there than it is if they have to wait around for one.

Ask for their keys:

• Asking your friend for their keys when they’ve been drinking doesn’t need to be awkward. Just be discreet and calm. You could even make light of the situation. It’s always better to pull a friend aside to talk to them in private.
• If you feel awkward about asking for their keys, enlist someone else’s help. Sometimes there’s strength in numbers.

Don’t give in. Persistence is key when dealing with the issue of drinking and driving. Insist that they find another way home.

If a friend’s been drinking but insists on driving, be prepared to call the police for help. It’s tough, but it could save lives.