The city of Lispat takes it’s driving safety very seriously. First time drivers must go through a more rigorous exam process than found in most other cities. All drivers must first receive an in class certificate for learning the rules of driving and safety standards. They must also spend at least 20 hours with an instructor for driver training. Once they take their driver’s test and pass they are given a certificate and must go take this to one central municipal building where there are stations and tests before receiving an official license to drive. The stations are as follows:

Station A – The driver shows their certificate for passing the driving test and receives an A stamp.

Station B – The driver takes an eye test. With a pass, the certificate receives a B stamp.

Station C – The driver’s legal record is reviewed. If the driver’s record is clean, the driver receives a C stamp.

Station D –The driver takes an online rules and safety test. When a drives passes the test a slot opens on the testing machine to place the certificate into to receive a D stamp.

Once all four stamps are received, the driver can take the certificate to another building to receive an official driver’s license.

The layout for the first building is as follows:

A I B I C I D I

|---20---|---20 ---|----20----|

The 20 refers to the distance between the stations and we will assume the measure is in feet.

The building is always very busy since it is the only location to service the entire city. Drivers tend to want to get the testing out of the way first. A typical day shows the following movement new drivers take when they enter the building.

The chart shows the movement of people between stations in the column to stations in the row.

For example, 20 people move from Station A to Station B; 100 people move from Station A to C; 150 from B to D; etc.

		A	B	C	D
	A		20	100
	B				150
	C	85			15
	D	70	120

A) Calculate the movement cost of the current layout. Note that the cost is not measured in monetary terms. The cost is the distance.

B) Create a better layout and the new movement cost. The layout must be linear.

What is the movement cost savings