Richard Petty, the sport's most enduring icon of victory and decency, is quoted as advising drivers to "cheat neat."

He still advised drivers to check for alternate routes before setting out.

They have developed a computer-driven dashboard display that advises drivers throughout a trip on ways to reduce fuel use.

A small road sign near the point where the bus entered Route 515 advises drivers: "Trucks over four tons excluded."

The Dutch police advised drivers of empty lorries not to enter the Netherlands.

Detroit, meanwhile, was promising cars that would tell passengers when to fasten their seat belts or advise drivers when they are low on fuel.

Company officials advised drivers to use fuel credit cards that recorded only the date, not the time, of the fuel stop, he said.

The center would advise drivers of congested areas, weather, accidents, or any other blockage.

"To advise drivers who operates the road", says the Agency.

Spotters also advise drivers on navigating track-obstructing crashes and may relay messages from one driver to another.