First problem what you find is how to get correct object scale. So, here I show few basic objects scale, what you must keep in mind:
- Typical human height is about 1.70 - 1.80 meters.
- One house floor up to 3 meter.
- Usually one building floor have about 3 meter. First floor, also usually have 4 m, if you have living house with a lot of flors.
- Street lights pole 10-12 m.
- Small tree 5-10 m. Big tree for 20 to 30 meters.
- One road side have 3-4m wide. So, two sides have 6-8m.
- Road sign have 3m height. And Information face have 0.70 m wide.
- Street lights pole have height from 10 to 12 meters.
- Light Cars - approximately 3 meter long, 1.5 m height and 2 m wide.
- Young - 5, 7 meters
- Trees 20 years old - 10 - 15 meters
- Old big tree, forest - 20 - 30 meters.