1 Tour per chain Vs multiple tours per chain

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1 Tour per chain Vs multiple tours per chain

Postby i.kobeissy » Mon Feb 25, 2019 7:37 pm

Hello,

the way we function with PTV xTour, oblige us to cut the Tours (TransportAB) into smaller tours in our database, the criteria on which we cut the tours is the complete unloading of the vehicle, so we consider that after each Loading and complete unloading we have a tour, now when sending the inputPlan we rejoin all the tours of a vehicle and send them in 1 chain

we need to use the parameter maxTransportPointCountPerTour with TransportAB and we also need to use TransportAB so my question is :
is there a difference or side effects of sending multiple tours per chain, is it possible for us to consider that each cut tour = 1 PTV tour and then we can send multiple tours per chain ?

thanks in advance
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Re: 1 Tour per chain Vs multiple tours per chain

Postby Joost » Tue Feb 26, 2019 8:43 am

If you want to have multiple tour after each-other this only possible if those tour all start and end with the same depot (-1 does not count, it has to be an existing depot). Else you are limited to a single tour per chain.
Joost Claessen
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PTV Benelux
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Re: 1 Tour per chain Vs multiple tours per chain

Postby i.kobeissy » Tue Feb 26, 2019 6:11 pm

Joost wrote:If you want to have multiple tour after each-other this only possible if those tour all start and end with the same depot (-1 does not count, it has to be an existing depot). Else you are limited to a single tour per chain.


Hello, thanks for the answer, this is well understood but does this mean that this way there's no side effects on the planning ? and for the Regulations and remainingPeriod we still get the same calculations ?
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Re: 1 Tour per chain Vs multiple tours per chain

Postby Joost » Wed Feb 27, 2019 7:46 am

The regulations will work as intended with 1 big tour. This type of planning ia very common when dealing with a FTL planning where the driver does not return home each night. Regulation are needed in this situation to make the driver take the appropriate amount of rest each night (and appropriate amount of breaks during the day).
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Re: 1 Tour per chain Vs multiple tours per chain

Postby Bernd Welter » Tue Mar 05, 2019 4:03 pm

My statement:
be aware that a single violated tour will ruin the optimization of the vehicle's chain.
So if e.g. the first tour of the chain violates the "max stop..." constraint we will not optimize the vehicle at all but just evaluate its given time scheme.

Depending on your expectation towards the optimum (e.g. Balance between the tours?) you should be aware that Balancing allows only one tour per Vehicle.

Cheerio,
Bernd
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