In the vanilla game, there's a "VIP" event where a route is drawn along a road and several incidents/tasks are placed on that route. Is it possible to create modded versions of that?

If so...

Flooded road

A section of road becomes flooded, affecting traffic. Can occur during bad storms, can also be due to a burst water pipe.

"Keep crossroads clear" would be renamed "Flooded junction". Police (or fire service?) would be required to wait at the junction to divert traffic until the "VIP" arrives.

"VIP" marker (that moves along the route) is renamed "Water pump truck". So it looks like it's sucking up the water from flooded junctions.

"Protest"-style incidents along the route would depend on why the event started:

• Bad weather: Fire service needs to clear away some debris (crashed car, or maybe a garbage bin swept in to road due to flooding).
  
• Burst water pipe: Fire service need to fix the pipe.

Dangerous road conditions

When temperature is very low (ice on road) or when there is a blizzard (snow on road).

"Keep crossroads clear" would be renamed "Dangerous conditions". Police (or fire service?) would need to wait at the junction to divert traffic until the "VIP" arrives.

"VIP" marker (that moves along the route) could be either a "Gritter / Salt Spreader" (spreading salt to deal with ice), or a "Snow plough" (to remove excess snow from road in a blizzard).

"Protest"-style incidents along the route would depend on why the event started:

• Very cold (ice): Fire service need to remove crashed vehicles. Ambulance may be required to deal with injured pedestrians (eg. slipped on ice).
  
• Blizzard (snow): Fire service need to remove some excess snow that the snow plough won't be able to reach.

Road works

A section of road is being dug up for some reason such as: Fixing sewers / Installing fibre optic cables / Replacing water pipes / etc.

Diversions will be required, and maybe some additional works at some junctions (depending on the reason for road being dug up). For example, there might be need to set up temporary traffic lights, or place temporary road surface, or remove old pipes...

The "VIP" could be a "Road layer vehicle" that replaces the road service as the work is completed.