Triangle Plastic Sheets

Triangular Signs That Warn Drivers in Advance

Triangular traffic signs warn drivers about a hazard ahead. The symbol inside the red-bordered triangle shows the type of hazard, so drivers slow down and proceed with more care when they see it. For this reason, triangular signs are placed ahead of the hazard, at a distance that gives drivers time to react, rather than at the hazard itself.

Sign Types

• Speed bumps ahead: before speed bumps or an uneven road surface.
• Roadworks: at maintenance, repair and construction areas.
• Road narrows: road narrows on the right, on the left and on both sides.
• Two-way traffic and loose road surface: where the traffic layout or road conditions change.
• Caution and disabled parking: a general caution sign and a triangular disabled parking sign.

Where Are They Used?

Triangular signs are used on estate and factory roads, car park ramps, construction site entrances and areas under maintenance. Combined with speed bumps, delineators or cones, they give drivers both a warning and physical guidance.

Frequently Asked Questions

I have installed a speed bump. Do I need a sign as well? A speed bump warning sign placed before the bump is recommended so that drivers notice it in time.

Where should a triangular sign be mounted? Before the hazard, within the driver's line of sight, fixed to a post or wall. On public roads, placement is decided by the road authority.