40th Birthday Card – “Zone Ends” Speed Limit Sign Design

Make their milestone birthday memorable with this clever 40th birthday card. Featuring a hand-drawn UK-style road sign, the card boldly marks their arrival into a new decade. In the top section, a red circle frames the number “40” in black. Below, a smaller grey sign shows “30” crossed out and the phrase “ZONE ENDS.” It’s a brilliant visual joke to say goodbye to their thirties — and hello to forty!

This 40th birthday card is great for siblings, coworkers, friends, or partners. It’s especially perfect for someone with a dry sense of humour who enjoys clean, simple design. The pastel blue background keeps the look fresh and lighthearted while still making a statement.

We print the card on premium FSC-certified cardstock. That means it’s sustainable, durable, and designed to last. The inside is blank, giving you space to write a thoughtful, cheeky, or sarcastic message — whatever fits your relationship.

This design is part of our funny birthday cards and milestone birthday cards collections. If you’re celebrating someone who’s not into glitter or sentimental mush, this minimalist road sign card is the perfect match.

Why they’ll love it:

• Witty UK road sign design with a “Zone Ends” milestone joke
• Hand-drawn style with a modern, pastel colour scheme
• Blank inside for your personal message
• Printed on eco-friendly premium cardstock

Looking for more funny milestone designs? Check these out:

• Birthday Cards for Her
• Birthday Cards for Friends
• Top-Selling Birthday Cards

This 40th birthday card is a clever, funny way to welcome someone into their forties — and officially end the thirties zone with style.