[sumo-user] regarding change of allowed speed along a route

[Richter Gerald <Gerald.Richter@xxxxxxxxx>]

hi all,

to my understanding, when a vehicle enters the simulation stage,
it is randomly given a certain speed factor
that relates to the max allowed speed and
will lead to a desired velocity slightly below or above the lane limit.

what happens, when the allowed speed changes along the route?
I found this old communication:
https://sourceforge.net/p/sumo/mailman/message/27058304/

but would like to ask again.

• is the speed factor re-shuffled in such a case?
• are there any other cases where it is re-shuffled?

is there a rudimentary documentation (apart from the source code) 

which describes the life-cycle of a vehicle and what wondrous things might happen along the way?

thanks, best regards
Gerald.