- bits 9 and 8 are only applied to user-requested traci changes. the statement "adapt speed to fulfill request" describes that traci changes are treated with "urgency" and thus on the same level as strategic changes. When this is set, other vehicles will assist the ego vehicle to achieve the necessary gaps.
- bits 3 and 2 only control lateral cooperative movement but this applies to things that the vehicle (it's lanechangemodel) would do when left alone. The bits have no impact on traci.changeLane and similar commands.
> in what situation does a vehicle need to "cooperatively" change lane to
"allow" another vehicle to change lane? Since the vehicle could just
increase its speed to create a gap?
consider an on ramp to a two-lane motorway A vehicle on the right lane may elect to change left for helping a vehicle merge rather than braking to create a helpful gap.
Also, the merging vehicle cannot ensure a gap by increasing speed since it is constrain by the length of it's acceleration lane.