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The safest speed of a vehicle is according to: The safest speed of a vehicle is according to:

  • A. capability of the vehicle

  • B. road and weather conditions

  • C. capability of the driver

    The correct answer is B
    When driving, always consider the road and weather conditions before pushing down hard the gas pedal. If the road is wet it is safest to drive at a moderate speed, while in an expressway you should always observe the minimum speed limit.

Safest speed


The safest speed to drive relies on road conditions, weather conditions and the abilities of your vehicle. The speed limits on rural roads are usually faster than in urban areas, and this is because urban areas are more congested than rural areas, have more pedestrians, have more distractions, and a more frequent incidence of vehicles leaving and joining your road. Many rural roads have a speed limit of 80kph while urban areas have 40kph to 60kph, and even down to 20kph on more crowded streets and school zones.

When driving on faster roads during or after the rain, you may have to go slower than the speed limit because the road becomes slippery when wet. Manhole covers and painted lines are very slippery when wet if you’re driving after or during a rain shower. While the road is more slippery when wet than when it is dry, you should also be aware that water may obscure hazards on the road such as potholes, road lines or pedestrian lanes.


Republic Act No. 4136, Chapter IV, Article I, Section 35

Restriction as to Speed. – (a) Any person driving a motor vehicle on a highway shall drive the same at a careful and prudent speed, not greater nor less than is reasonable and proper, having due regard for the traffic, the width of the highway, and of any other condition then and there existing; and no person shall drive any motor vehicle upon a highway at such a speed as to endanger the life, limb and property of any person, nor at a speed greater than will permit him to bring the vehicle to a stop within the assured clear distance ahead.


(b) Subject to the provisions of the preceding paragraph, the rate of speed of any motor vehicle shall not exceed the following:



Passengers Cars Motor trucks and Motorcycle and buses


On open country roads, with no “blind corners” not closely bordered by habitations.

80 kph

50 kph


On “through streets” or boulevards, clear of traffic, with no ” blind corners,” when so designated.

40 kph

30 kph


On city and municipal streets, with light traffic, when not designated “through streets.”

30 kph

30 kph


(c) The rates of speed hereinabove prescribed shall not apply to the following:(1) A physician or his driver when the former responds to emergency calls;(2) The driver of a hospital ambulance on the way to and from the place of accident or other emergency;(3) Any driver bringing a wounded or sick person for emergency treatment to a hospital, clinic, or any other similar place;(4) The driver of a motor vehicle belonging to the Armed Forces while in use for official purposes in times of riot, insurrection or invasion;(5) The driver of a vehicle, when he or his passengers are in pursuit of a criminal;(6) A law-enforcement officer who is trying to overtake a violator of traffic laws; and(7) The driver officially operating a motor vehicle of any fire department, provided that exemption shall not be construed to allow unless or unnecessary fast driving of drivers aforementioned.See the full section hereSpeed limits are different on expressways where the minimum speed is 60kph and the maximum is 100kph, and speed limits varies with different vehicles and different expressways, too. If you want to know more about the speed limits on expressways, you can visit this page of the Toll Regulatory Board website.