Warning signs

Dip in road

A sudden dip in the road is ahead, so slow down and be prepared for a change in level.

Reduce speed before the dip and keep steering and braking smooth as the road drops and rises. The warning is normally placed before the depression in the road surface.

A common triangular design shows a hollow in the road profile within a red border. The United States’ W8-2 uses a yellow diamond bearing the word DIP.

How it looks in each country

Official sign in each country; the code is its number in the national rules. Signs that come in two directions show the left and the right version.

Vienna Convention modelCode A,7c
ArgentinaCode P-11(b)
AustraliaCode W5-9
BangladeshCode B34
BrazilCode A-19
CanadaCode D-365
ChileCode PG-10
ChinaCode 警 26
ColombiaCode SP-26
CroatiaCode A09-1
DenmarkCode A38
EstoniaCode 153
GreeceCode K-11
IndiaCode II-47
IndonesiaCode 3e
IrelandCode W-131
Italy
PortugalCode A2b
Saudi Arabia
SerbiaCode I-9
SpainCode p15b
SwedenCode A9-2
TaiwanCode 警32
ThailandCode ต-37
UkraineCode 1.12
United StatesCode W8-2

Image credits

Sign images from Wikimedia Commons, used under their licences.

Vienna Convention model A,7c: United Nations, Public domain
Argentina P-11(b): Original: Vialidad Nacional - Ministerio de Transporte - Presidencia de la Nación Vectorization: Civitas13, Public domain
Australia W5-9: Standards Australia, Public domain
Bangladesh B34: Bangladesh Road Transport Authority, Public domain
Brazil A-19: Departamento Nacional de Infraestrutura de Transportes, Public domain
Canada D-365: Transports Québec, Public domain
Chile PG-10: Government of Chile – National Traffic Safety Commission, Public domain
China 警 26: Standardization Administration of the People's Republic of China, Public domain
Colombia SP-26: Gobierno de Colombia, Public domain
Croatia A09-1: มองโกเลีย๔๔, CC BY-SA 4.0
Denmark A38: Bewitchedroutine, Public domain
Estonia 153: Atudu, CC0
Greece K-11: Peeperman, Public domain
India II-47: Indian Roads Congress, Public domain
Indonesia 3e: มองโกเลีย๔๔, CC BY-SA 4.0
Ireland W-131: Government of Ireland – Department of Transport, Public domain
Italy: F l a n k e r, Public domain
Portugal A2b: Gigillo83, CC BY-SA 4.0
Saudi Arabia: Kingdom of Saudi Arabia – Ministry of Interior, Public domain
Serbia I-9: Gigillo83, CC BY-SA 4.0
Spain p15b: No machine-readable author provided. Benedicto16 assumed (based on copyright claims)., Public domain
Sweden A9-2: Transportstyrelsen, re-made by Gigillo83, Public domain
Taiwan 警32: 中華民國交通部, Public domain
Thailand ต-37: Government of Thailand, Public domain
Ukraine 1.12: Government of Ukraine, Public domain
United States W8-2: Federal Highway Administration – United States Department of Transportation, Public domain