Motorists should think of safety first and not toll-free offers or discounts when travelling at night.

Malaysian Institute of Road Safety Research (Miros) director-general Prof Dr Ahmad Farhan Mohd Sadullah said driving at night required a different set of skills from day driving.

"Motorists should not change their driving habits for the sake of getting a discount," he told The Star yesterday.

However, he said if drivers still insisted on driving at those times, they should plan their journeys by resting adequately before setting off or have a back-up driver.

Dr Ahmad Farhan was commenting on offers by the concessionaires of the Kuala Lumpur-Karak and East Coast Highways not to charge any toll for travelling between 11.30pm and 4.30am on certain days in conjunction with the Chinese New Year celebrations.