21. Typically, tolls increase as traffic density and congestion within the tolled lanes increase, a policy known as congestion pricing. 22. The fee is based on traffic density , which is relayed to the transponders by electronic detectors in the pavement. 23. The "'Biham Middleton Levine traffic model "'for a 144 x 89 lattice, with a traffic density of 39 %. 24. A user sets up the signal timing, and picks the traffic density levels and direction that they apply to. 25. This effort is complicated by crossing traffic, severe weather, special missions that require large airspace allocations, and traffic density . 26. Several major cities around the world have attempted to overcome problems with traffic density by building elevated or underground roadways. 27. This hazard is an unintended consequence of RVSM vertical spacing reductions which are designed to increase allowable air traffic density . 28. To this day some rail lines, mostly passenger routes with a very high traffic density , maintain centralized readout, non-talking detectors. 29. In 2015, the highest traffic density on the route was between S�meru and Rakvere, with an AADT of 6 000. 30. Instead he correlated traffic fatalities to traffic density , as measured by the proxy of motor vehicle registrations and country population.
