A speeding motorist was caught gesticulating at a speed camera while holding a mobile phone in the other hand during a police crackdown.
Police say they were astounded by some of the incidents
Officers also clocked a mother with two young children in her car driving at almost double the speed limit last week during national No Speeding Day.
A total of 1,644 drivers were detected during the campaign on April Fools Day, a fall of 250 on last year's figure.
Police said some of the incidents had been "quite frightening".
The campaign was led by Ian Dickinson, the assistant chief constable of Lothian and Borders Police, and vice-chairman of the Association of Chief Police Officers in Scotland's road policing standing committee.
He said: "What many of the public don't realise is that more people died on Scotland's roads in 2002 than were the victims of murders - 305 people died on
our roads compared to 127 murder victims.
"That is why we welcome the attention being given to improving road safety today.
"Trying to reduce the number of people killed or seriously injured on our roads is an area where everyone can make a difference.
"Whether it's by slowing down by a few miles an hour, wearing your seatbelt at all times or leaving your car at home if you are going out in the evening for a few drinks."
He said a man was captured gesticulating at a mobile speed camera in Tayside while also using his mobile phone.
"This meant he wasn't holding the steering wheel whilst travelling at 50mph - it's just crazy," he said.
"On the same day a woman was detected in the Strathclyde area driving at 90mph in a 50mph limit with two young children in the vehicle.
"These examples show that there are some motorists who have no concept of the dangers they put themselves and other motorists in."
The World Health Organisation (WHO) has dedicated this year's World Health Day to reducing road deaths, a move backed by Scotland's eight police forces.
Transport Minister Nicol Stephen took part in the Scottish launch of World Health Day at Hampden Park in Glasgow.
There are concerns over traffic speeds near rural schools
He announced the approval of guidelines for the introduction of 20mph zones outside schools.
The zones would particularly benefit rural schools as speed limits were often above 40mph, Mr Stephen said.
The guidance recommends installing advance warning signs of the new speed limit and low-cost part-time signals.
"Parents, teachers and pupils all want safer streets around our schools," said the minister.
"We have listened to their concerns, particularly from our rural communities where fast moving traffic outside schools can be a real concern."