[1] However, many heavy vehicles especially express buses do not obey these speed limits.
Starting from the 2006 Hari Raya Aidilfitri, the Malaysian Police began enforcing lower speed limits during festive seasons for all federal and state roads, from the default 90 km/h (56 mph) down to 80 km/h (50 mph).
Over the years, several attempts to set higher speed limit for the expressways were being made by certain quarter of the public.
However, each attempt was successfully turn-down citing safety as one of the main reason for the rejection.
However, many road users complain about the viability of the lower speed limit because the accident rate during festive seasons continue to rise even with lower speed limits, as the lower speed limit doesn't seem to bring any significant effects of reducing the accident rate; therefore, lower speed limit alone is not the effective deterrent of fatal accidents during festive seasons.