True, but I think the parent comment was referring to less congestion. When it comes to bicycling, I always feel that it's my responsibility as a rider to look out for my own safety. Always regard all and any cars as being driven at 4AM by a drunk driver - regardless of time of day. In the middle of the day that means keeping track of multiple vehicles in different directions relative to my path.

During low traffic, there may be one vehicle to keep track of, and few pedestrians or other bikes.

That safe environment is quickly turned into an enabler for more aggressive and careless riding though. For fun and for getting from A to B faster.