You can watch the web traffic on WhiteRockBeach.ca in real time.
The residents of White Rock Beach, us included, would say all day long. Last night at about 2:15 am we heard the train whistles just a blowing. In the evening about supper time you might see 3 to 4 trains per hour.
If you come to White Rock Beach and park for 4 hours, you will most likely see a few.