Comment 3 for bug 1662443

Agree with all this. If the driver uncouples his tender and drives off, he should get into trouble fairly quickly. I would prefer that behaviour over some block on driving without a tender.

If the loco does not have an explicit IsTenderRequired = true, can we look to the first wagon connected to the loco? If it is a tender and contains coal and water, that fuel becomes available.

We ought to deal with double tenders too (e.g. Big Boy and Flying Scotsman) by scanning along for a series of tenders. There was a recent request for exactly this.