danger of falling through a manhole
manhole safety, open manhole hazard, street safety, fall prevention, public safety, urban accident, construction safety, pedestrian danger, manhole cover missing, workplace safety, city infrastructure, road hazard, sewer safety, fall injury, street maintenance, underground hazard, manhole awareness, safety inspection, risk management, injury prevention, urban safety, street accident, public hazard, fall risk, rescue operation, safety warning, street worker safety, emergency response, infrastructure failure, safety training, safety campaign, hazard prevention, city worker safety, safety protocol, manhole incident, safety procedure, risk assessment, human safety, street repair safety, manhole protection