DRIVERS OF THESE BIG RIGS KNOW THAT LOWER SPEEDS CUT DOWN ON FUEL CONSUMPTION AND GREENHOUSE GAS EMISSIONS.

BUT SOME FEEL A SPEED LIMIT OF 105 KILOMETRES AN HOUR MAY NOT MAKE THE HIGHWAYS ANY SAFER.

JOHN BROPHY:

"THERE'S GOING TO BE TRUCKS DRIVING 65 AND CARS DRIVING THEIR NORMAL 70 OR 75.

A TRUCK WILL PULL OUT TO PASS ANOTHER ONE AND THEY'LL HOLD UP THE HIGHWAY FOR MILES.

AND THEY'LL JUST CAUSE GREAT CHAOS ON THE HIGHWAY."

POSSIBLY LEADING TO ROAD RAGE WHEN TRUCKS ARE STUCK IN PASSING LANES LONGER.

BARCLAY ROBERTS, WHO TRAINS TRUCK DRIVERS, SAYS ONTARIO ALREADY HAS LAWS AGAINST SPEEDING... AND THAT'S WHERE THE FOCUS SHOULD BE.

BARCLAY ROBERT:

"WHERE'S THE ENFORCEMENT AND HOW ARE WE GOING TO ENFORCE IT.

I MEAN WE CAN ENFORCE THE LAWS THAT WE HAVE ALREADY ON THE BOOKS.

BUT YOU KNOW, THAT'S PROBABLY, WOULD MAKE THE MOST AMOUNT OF SENSE TO ME."

TRANSPORTATION MINISTER JIM BRADLEY SAYS FORCING TRUCKERS TO INSTALL "SPEED LIMITERS" WOULD REDUCE ACCIDENTS, AND BE GOOD FOR THE ENVIRONMENT.

BUT SOME DRIVERS WONDER HOW OUT-OF-PROVINCE TRUCKERS, WITHOUT SPEED LIMITERS, WILL BE POLICED.

ANOTHER CONCERN-- THE SLOWER THEY GO, THE LONGER IT TAKES TO DELIVER SHIPMENTS...AND THAT CUTS INTO THEIR PAYCHEQUE.

CHRIS HARVEY:

"IT'S HUMAN NATURE TO LOOK FOR THE LOOPHOLE, TO GET AN EDGE, TO BEAT THE SYSTEM.

AND THAT VERY WELL COULD HAPPEN WHEN IT COMES TO LICENSING TRACTOR TRAILERS."

NEIL WILSON:

"MOST OF THE MONEY THAT WE'RE GETTING RIGHT NOW TO REGISTER TRUCKS WILL PROBABLY BE MOVED TO OTHER STATES OR PROVINCES WHERE IT'S CHEAPER AND THEY CAN RUN WITHOUT SPEED LIMITING DEVICES ON THE TRUCK.

IT MIGHT BECOME STANDARD AT SOME POINT, BUT UNTIL THAT POINT YOU KNOW, WE'LL PROBABLY LOSE A LOT OF REVENUE BECAUSE OF IT."

EVEN THOUGH THE SPEED LIMIT LEGISLATION IS SUPPORTED BY THE ONTARIO TRUCKING ASSOCIATION ... MANY OF ITS MEMBERS SAY IT'S ONE MORE RULE THEY DON'T NEED.

CHRIS HARVEY, CKWS NEWSWATCH KINGSTON.