Here in Germany there is also a law against driving after brain surgery but for only three months. With Drs tests and okay though you can drive sooner. I went straight from the hosp. into rehab and you have to see a psychiatrist during treatment. He asked if anything was bothering me and I told him that I wanted to start driving again. He then gave me a reflex test (it was about 20 min. long, computer program with hand, feet, eye, and sound coordination). He then asked alot of questions I think to find out if I was depressed, and then wrote in my patient files that I could drive again. I think this was in the 4th week after surgery. Two days later my wife came to visit and I drove home 2 hours and only had problems with my dry eye. The dry eye was my only problem until it got better, the sunshine or night driving in the rain bothered my eye alot.
Wish you alot of luck and hope you can start driving again soon.
Dan in Germany