For safe driving, stock headlamps are sufficient. People who buy increased brightness bulbs do so for added comfort and being able to drive for longer with lesser fatigue. If the driver is having accidents, maybe his eyesight is suffering due to cataracts or vitamin A deficiency. Since proper medical tests during driving license exam is practically non-existent here, poor eyesight wouldn't be caught at license renewal.
Buying even more brighter bulbs for him is not a solution. He'll blind oncoming traffic and some driver due to blind spots in his/her eyes could hit your friend's corolla again. Please have a thorough eye exam done.
BTW objects which don't issue their own light are difficult to save as at highway speeds stopping distance is always greater than headlight sight distance. If you don't see the object in peripheral vision (very difficult in the glare of oncoming traffic, especially when irresponsible people are using high beams too), you're sure to crash in them. That's why all cars have bright red tail lights with reflectors, and even headlamps are fitted with reflectors so a parked car also indicates of its presence from a greater distance. Traffic police and rescue workers likewise have jackets with fluorescent stripes. Cyclists and animal carts are required by law to hang red flags and also a night light e.g. lantern but due to ignorance of law enforcement staff and general attitude of sympathy towards cart owners' poverty it is not been acted upon. Many a motorcyclist have died due to the cruelty of these animal carts. I can guarantee you brighter bulbs won't help avoiding collisions with animal carts. Peripheral vision will (which works best with low beams).
