Design Document:Vehicles misc.

Reliability

Each vehicle has a ‘reliability’ rating. It corresponds to the probability of a breakdown.

Reliability = 100 points when vehicle has been freshly serviced. It will drop slowly to 0.

It will drop:

   * 1 per 10 days when vehicle is idling (stopped or loading)
   * 1 per 5 days when vehicle is working in normal specs
   * 1 per 1 day when vehicle was overstrained (for instance there was more TE required of a locomotive then the locomotive can handle)
   * Each service reduces max-reliability by 1, but no more then 4 points per year and minimum 1 per year. 

Below 50 a real possibility of a breakdown starts to kick in.

At 51+ reliability there is 0.25% chance for a breakdown

At 50 reliability there is 2% chance for breakdown

At 25 reliability there is 50% chance for breakdown

At 1 reliability there is 98% chance for breakdown

Idea: Max reliability may be randomised – ranging from 75 to 125

Idea: New models may have reduced max reliability which will rise in the first 2-3 years

Service of a vehicle takes 2 days game time.

Life-span

Vehicles don’t have ‘life’ but they are limited by dropping maximum reliability (thus increasing chance for a breakdown).

100 reliability will give approx. 20 years of useful (breakdown free) vehicle life.

Wrecks

Wrecks happen when vehicles when they collide or fall off the track or road.

Trains

   * Failed signals – randomly a signal may malfunction causing a train to override 

it and possibly crash onto another train.

   * Derailment, Catastrophic – locomotive derails, mayhem ensues, destroying loco 

and random amount of wagons (rest will appear at the nearest depot, cargo remains on train, passengers are lost)

Road Vehicles

   * Train wreck – a vehicle is destroyed by a train on a level crossing. Road 

vehicle is destroyed, loco loses 10 reliability points. Train must stop for 1 game day.

   * Random crash – one vehicle loses traction and falls of the road, possibly 

crashing into another vehicle

Aircraft

   * Fatal Breakdown/Bad dispatching etc – plane makes ‘kaboom’ and drops to the 

ground (probably destroying buildings below)

Ships

   * Ship catches fire, or is pirated or whatever and sinks.