What parts of the car need to be checked before driving on the highway?

[Steve]

Before driving on the highway, it is necessary to check components such as tires, brakes, engine oil, and lights. These inspections are essential for driving safety and cannot be omitted. Among all the components of the vehicle, tires operate in the harshest conditions. Long-distance driving subjects tires to greater pressure compared to short trips, increasing the likelihood of a blowout. Before driving on the highway, it is crucial to check the tire pressure, measuring all four tires and the spare tire to ensure they are within the normal pressure range. Additionally, inspect the condition of the tires for any surface damage, bulges, punctures, aging cracks, etc. Before the trip, make sure to check if the brake pads are too thin. If they are thinner than 2mm, they must be replaced. Besides inspecting the brake pads, also check the brake fluid, as without it, the brakes won't function. The brake fluid reservoir has a normal fluid level range; ensure the fluid level is within this range. Engine oil is used to lubricate and cool engine components. Insufficient oil can lead to inadequate lubrication, significantly reducing the engine's lifespan. Excessive oil can cause increased internal resistance and pressure, resulting in reduced engine performance or oil leakage. Older engines may also experience oil burning. Turn signals, low beams, high beams, fog lights, and width indicators each serve specific functions, and the absence of any can affect driving safety. Checking the lights before driving on the highway is indispensable.