If we aren't going to change the clocks in Washington, permanent PST is better than permanent PDT.
1. Work and school starting times are usually in a narrower band of time than work and school ending times, which means you tend to have more traffic density in the mornings.
2. Road conditions tend to be worse in the morning than in the evening. It tends to be colder in the morning meaning it is more likely to have ice or fog.
When you are in the part of the year where there is not enough daylight to have both the morning and evening commute times covered by daylight, for the above reasons you are better off favoring morning daylight, because morning combines the worst traffic with the worst road conditions.
1. Work and school starting times are usually in a narrower band of time than work and school ending times, which means you tend to have more traffic density in the mornings.
2. Road conditions tend to be worse in the morning than in the evening. It tends to be colder in the morning meaning it is more likely to have ice or fog.
When you are in the part of the year where there is not enough daylight to have both the morning and evening commute times covered by daylight, for the above reasons you are better off favoring morning daylight, because morning combines the worst traffic with the worst road conditions.