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From: Modeling hourly weather-related road traffic variations for different vehicle types in Germany
Variable name | Variable type | Variable description |
---|---|---|
Potential predictor variables for NO_MET | ||
hour | Categorical (24) | Hour of the day |
dow | Categorical (7) | Day of the week (public holidays are treated as Sundays) |
mon | Categorical (12) | Month of the year |
holiday | Categorical (2) | School holiday in the federal state of the traffic station |
trend | Continuous | Linear trend in time |
hour:dow | Interaction | Different diurnal cycles on different days of the week |
break | Categorical (n) | \(n={2,3,4}\) segments determined by breakpoint detection (if \(n=1\) this term and its interactions are excluded) |
break:trend | Interaction | Different trends in different segments |
break:hour | Interaction | Different diurnal cycle in different segments |
Potential predictor variables for MET | ||
temp\(^k\) | Continuous | Daily maximum temperature at 2 m height at the ERA5 grid cell closest to the traffic station |
cloud\(^k\) | Continuous | Daily mean total cloud cover at the ERA5 grid cell closest to the traffic station |
wind\(^k\) | Continuous | Daily maximum wind gust at 10 m height at the ERA5 grid cell closest to the traffic station |
precip\(^{1/k}\) | Continuous | Average hourly precipitation sum of all RADOLAN grid cells within a radius of 10 km around traffic station |
weekend | Categorical (3) | Distinguish between working day, Saturday, and Sunday (only included in interaction terms below, but not as single variable) |
weekend:temp\(^k\) | Interaction | Different relationships between temperature and traffic |
weekend:precip\(^{1/k}\) | Interaction | Different relationships between precipitation and traffic |
weekend:clt\(^k\) | Interaction | Different relationships between cloud cover and traffic |
weekend:wind\(^k\) | Interaction | Different relationships between wind speed and traffic |