Home Cautionary Road Signs What is the symbol for “Loose Gravel”? Driving EducationCautionary Road Signs What is the symbol for “Loose Gravel”? By admin - August 16, 2022 165 0 FacebookTwitterPinterestWhatsApp This sign is usually erected on hilly roads where loose earth or gravel keeps on falling on the road. Driver should drive slowly and carefully after this sign as little carelessness can cause major accidents here.