And before you ask…
These are the rough guidelines. There could be roads that doesn’t conform to these guidelines.
highway, blue signs.
e.g. Road 20 (Ayalon), Road 5 between Glilot and Kesem, road 1 between Tel Aviv and Shaar HaGai, etc.
Main roads, green signs.
e.g. Road 1 between Shaar HaGai and Jerusalem, Road 4 north of Holon
Usually 1-digit ref numbers.
Main roads, usually 2-digits ref numbers.
usually 3-digits ref numbers.
usually 4-digits ref numbers.
Also: main roads in residential areas, and roads leading to villages.
Smaller paved roads in non-residential places.
e.g. agricultural roads, forest roads, roads from behind one village to behind another village, etc.
Roads in residential places (city, town, village, etc.)
Roads in parking lots, fuel stations, inside universities, inside factories, etc.
where people walk between roads in residential areas (like “path” outside of residential areas)
where people walk and there are many shops. Like “Midrahov”, or “Passage”, etc.
Temporary tagging, if the type is unknown. try to add a “note” tag.