Dubai: Motorists should be extremely cautious while driving in adverse weather conditions as low visibility, strong winds and sand shifting can cause serious accidents, Dubai Police's Traffic Department said on Sunday.

Motorists should be very careful when they drive in the weather conditions the UAE is witnessing right now, which result in very low visibility, besides strong winds that make it harder for them to control their cars, Major General Mohammad Saif Al Zafein, Director of Traffic Department, said.

One man died and four sustained moderate to serious injuries in weekend traffic accidents, he said.

The first accident took place at 4:30pm on Thursday when a car hit a pedestrian on the Al Wasl-Al Thania junction, which resulted in serious injuries to the pedestrian who was taken to hospital.

At 1pm on Friday, an Asian pedestrian died when he was hit pedestrian by a car in Rashidiya, while at 1:30am on Saturday, a car overturned on Dubai Bypass Road in the Sharjah direction, which resulted in the Emirati driver and an Emirati passenger sustaining moderate injuries.

Later on Saturday, an Asian driver sustained serious injuries when his truck hit another on Dubai Bypass Road at 4:30pm, and he was taken to hospital for treatment.

Meanwhile, the Traffic Prediction Section denied circulating BlackBerry stories about a cyclone that is expected to hit the UAE.

"We heard these stories, but they are untrue, and it is very hard to predict the weather because yesterday's forecast said the weather would be clear today, but it changed suddenly from late last night," Lieutenant Badr Ahmad Al Zafein from the Weather Forecast Section, said.

Drivers should watch out for sand dunes on the sides of the roads resulting from the strong winds.

"Sand shifting and takes place and sandy patches form on the sides of roads, especially highways, which motorists should be wary of and avoid driving into the sandy patches, as it can cause a car to swerve if it hits the sand at a high speed," Lt Al Zafein said.

Drive slowly to avoid the risk of hitting the sand because in most cases this causes the driver to lose control and the car would overturn, he said.

Low visibility is expected throughout the day, and in these cases motorists should follow the same instructions as when they drive in the fog.