robert roman
Bob Roman
De facto industry standard for exterior carwash is now between three and four minutes.
This convenience is possible at conveyor sites that feature express lane(s) or a site with a fast in-bay automatic machine.
Fast means processing 20 cars an hour or more instead of 12 or less.
Does the ability to produce more cars an hour make a big difference? Absolutely
If customer arrival rate is nine an hour and service rate is 12 cars, there would be 75 percent chance customer will wait in line and time spent in system is twenty minutes.
If ten customers arrive an hour, it gets worse. Probability of waiting increases to 83 percent and expected time in system jumps to 30 minutes. And so forth.
Whereas if arrival rate is nine and service rate 20, probability of waiting drops to 45 percent and time in system drops to five minutes.
If arrival rate is nine and service rate 25, probability is only 36 percent and time is less than four minutes.
So, BOOM. On overage, very low chance of long waiting line.
Eight more cars an hour would also expand production possibilities frontier for in-bay from the 12,000 to 20,000 range to between 30,000 and 40,000.
Greater hourly throughput also makes it easier for operators to offer loyalty rewards and other contemporary marketing strategies.
Just as express and flex-serve platforms are making full-serve obsolete, express in-bay will make slow in-bay obsolete.
Food for thought
This convenience is possible at conveyor sites that feature express lane(s) or a site with a fast in-bay automatic machine.
Fast means processing 20 cars an hour or more instead of 12 or less.
Does the ability to produce more cars an hour make a big difference? Absolutely
If customer arrival rate is nine an hour and service rate is 12 cars, there would be 75 percent chance customer will wait in line and time spent in system is twenty minutes.
If ten customers arrive an hour, it gets worse. Probability of waiting increases to 83 percent and expected time in system jumps to 30 minutes. And so forth.
Whereas if arrival rate is nine and service rate 20, probability of waiting drops to 45 percent and time in system drops to five minutes.
If arrival rate is nine and service rate 25, probability is only 36 percent and time is less than four minutes.
So, BOOM. On overage, very low chance of long waiting line.
Eight more cars an hour would also expand production possibilities frontier for in-bay from the 12,000 to 20,000 range to between 30,000 and 40,000.
Greater hourly throughput also makes it easier for operators to offer loyalty rewards and other contemporary marketing strategies.
Just as express and flex-serve platforms are making full-serve obsolete, express in-bay will make slow in-bay obsolete.
Food for thought