Extension of StreetNetCZE data set with information allowing real network movement simulation. That is especially traffic restrictions (driving bans, turns, speed limits) and supplement information for orientation (traffic lane sorting, directional signs). The NAV upgrade escalates StreetNet CZE to the category of full-featured navigation databases for „turn by turn“ navigation (from one address to another).

Upgrade information is either in the form of complementary attributes or in form of relations. These are tables (in the DBF data format) which are interconnected with the basic layer on the grounds of key road id.

Vehicle Restriction
Eliminates entrance/transit of various types of motor vehicles, cyclists and pedestrians either in one or both directions.
Restriction categories for:

• Passenger cars
• Motorcycles
• Loader transporters
• Public transport busses
• Other busses
• Resident traffic
• Taxis, pedestrians, cyclists

Maximum Dimensions
Eliminates entrance based on proportions and weight of the vehicle (tunnel, bridge, etc.). The options of correct navigation are thus available for loader transporters (even of non-standard proportions) which have been hitherto marginalized. This part of the upgrade is very useful e.g. for transport companies.
Restriction parameters are set upon the highest permitted:

• Height of the vehicle
• Width of the vehicle
• Length of the vehicle or a vehicle assembly
• Momentary weight of the vehicle
• Momentary axle weight

• Toll

Paid road sections either in the form of a highway coupon (for vehicles up to 12 tons) or toll (for vehicles over 12 tons).