Road Depression

Reference Table

Core Sign Facts

Structured metadata for quick AI parsing and theory-test recall.

Core facts about Road Depression
Sign name	Road Depression
Sign type	Warning Signs
Expected in DTT?	Yes. This sign is commonly covered in Irish driving theory test preparation.
Action required	The road ahead contains a significant depression or dip that may be deeper than it appears from a distance. Reduce speed to 40-50 km/h as depressions can cause loss of control if taken at speed. After heavy rain, depressions often fill with water creating deep puddles that obscure road surface damage and can cause aquaplaning. The dip may hide stopped vehicles, debris, or pedestrians from view. Motorcyclists and cyclists are particularly vulnerable. Approach cautiously and be prepared for water accumulation.
Appearance	Triangular / Red and white
Typical location	Road Depression signs appear where roads dip significantly below the surrounding grade, common in areas with poor drainage or historical road construction. Locations include low-lying sections of rural roads in counties Clare, Galway, and Mayo where roads cross bogland, approaches to old stone bridges where roads descend sharply, coastal roads subject to tidal flooding in Cork and Kerry, and sections of Regional Roads where natural drainage channels cross the carriageway. Urban areas with subsidence issues also display these warnings.

This page explains what the Road Depression sign means, where it is typically found, and how drivers should respond in Ireland. It also connects you to closely related signs so you can compare similar road situations and build stronger theory-test recall.

What Does This Sign Mean?

Dip in roadway may hide hazards or ponding.

Key Points:

🕳️ Warns of a dip or depression in the road surface.

🐢 Reduce your speed to maintain control.

💧 Be aware of potential water pooling after rain.

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Barrier Board - 3 Bars

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Barrier Board - 4 Bars

Mid‑taper—remaining merging distance is reduced.

Barrier Board - 5 Bars

Taper end—closure point is imminent or lane fully ending.

Cattle or Farm Animals

Farm animals may be walking, crossing, or standing on the carriageway.

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High likelihood of children crossing (school/play area proximity).

Complete Guide to This Sign

Where You'll Find This Sign

Road Depression signs appear where roads dip significantly below the surrounding grade, common in areas with poor drainage or historical road construction.

Locations include low-lying sections of rural roads in counties Clare, Galway, and Mayo where roads cross bogland, approaches to old stone bridges where roads descend sharply, coastal roads subject to tidal flooding in Cork and Kerry, and sections of Regional Roads where natural drainage channels cross the carriageway.

Urban areas with subsidence issues also display these warnings.

What This Means for Drivers

The road ahead contains a significant depression or dip that may be deeper than it appears from a distance.

Reduce speed to 40-50 km/h as depressions can cause loss of control if taken at speed.

After heavy rain, depressions often fill with water creating deep puddles that obscure road surface damage and can cause aquaplaning.

The dip may hide stopped vehicles, debris, or pedestrians from view.

Motorcyclists and cyclists are particularly vulnerable.

Approach cautiously and be prepared for water accumulation.

Penalties & Legal Consequences

Excessive speed through road depressions causing loss of control constitutes careless driving: 2 penalty points and fines to €2,000.

If you aquaplane due to excessive speed through standing water in a depression, causing collision or endangerment, dangerous driving charges apply: 5 penalty points, fines to €5,000, imprisonment, and disqualification.

Drivers are expected to adapt speed to visible road conditions and warning signs.

Collisions in clearly signed depression zones result in full liability.

Appears in Driving Test?

Road surface hazards including depressions appear in theory test questions testing your knowledge of appropriate speeds for various road defects.

You must understand that depressions can hide hazards and accumulate water.

Practical driving tests may include roads with depression warnings where examiners assess whether you reduce speed appropriately (typically to 40-50 km/h), demonstrate heightened observation for hidden hazards, and show awareness of water accumulation risks.

Maintaining excessive speed through signed depressions results in Grade 2 faults for failure to respond to road conditions.

Frequently Asked Questions about the Road Depression Sign

What does the Road Depression sign mean in Ireland?

In Ireland, the Road Depression sign indicates: Dip in roadway may hide hazards or ponding. Understanding this is crucial for safe driving and passing your DTT.

What type of sign is the Road Depression?

The "Road Depression" is officially classified as part of the WARNING group in Ireland. Like other signs of this type, it alerts drivers to specific rules, hazards, or information they must immediately observe.

Will the Road Depression sign appear on the Irish Theory Test?

Yes, you should expect the Road Depression sign to appear on your Irish Driving Theory Test (DTT). You must be able to identify it as a WARNING and know what it requires from you as a driver.

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Road Depression

Reference Table

Core Sign Facts

Structured metadata for quick AI parsing and theory-test recall.

Core facts about Road Depression
Sign name	Road Depression
Sign type	Warning Signs
Expected in DTT?	Yes. This sign is commonly covered in Irish driving theory test preparation.
Action required	The road ahead contains a significant depression or dip that may be deeper than it appears from a distance. Reduce speed to 40-50 km/h as depressions can cause loss of control if taken at speed. After heavy rain, depressions often fill with water creating deep puddles that obscure road surface damage and can cause aquaplaning. The dip may hide stopped vehicles, debris, or pedestrians from view. Motorcyclists and cyclists are particularly vulnerable. Approach cautiously and be prepared for water accumulation.
Appearance	Triangular / Red and white
Typical location	Road Depression signs appear where roads dip significantly below the surrounding grade, common in areas with poor drainage or historical road construction. Locations include low-lying sections of rural roads in counties Clare, Galway, and Mayo where roads cross bogland, approaches to old stone bridges where roads descend sharply, coastal roads subject to tidal flooding in Cork and Kerry, and sections of Regional Roads where natural drainage channels cross the carriageway. Urban areas with subsidence issues also display these warnings.