implement MOBIL model for lane changing

[volkhin]

Few things have to be implemented:

• Random time to change lane before intersection -- currently cars always change the lane in the begging of the road which leads to traffic jams
• Change lane if the car is going forward on intersection and can be in any lane
• Better way to handle deadlocks if two cars change lanes one's to another's at the same time

[vvv112]

(sorry for the crooked translation of the Google translator) you can do the following: if a car approaches a traffic jam on one of the lanes,
and if there is a freer lane, it drives into the freest lane on the road.
she checks for streaks even while standing in traffic. how's the idea?