LINEAR PROGRAMMING TEST OF JOURNEY-TO-WORK MINIMIZATION

A METHOD IS DISCUSSED BY WHICH THE SENSITIVITY TO TRAVEL TIME CAN BE MEASURED. CALLED AN INDEX OF INDIFFERENCE, IT ATTEMPTS TO MEASURE THE EXTENT TO WHICH THE LINKAGES AMONG URBAN SPACE ACTIVITIES /IN THIS CASE, PLACES OF RESIDENCES AND PLACES OF WORK/ ARE INDIFFERENT TO TIME. SPECIFIC APPLICATION IS MADE TO THE JOURNEY-TO-WORK IN THE BUFFALO, N.Y. AREA. THE ANALYSIS SHOWED THAT PEOPLE ARE NOT INDIFFERENT TO TIME, AND ALTHOUGH THEY DO NOT ORGANIZE THEIR LINKAGES SO AS TO EXPEND THE MINIMUM AMOUNT OF TIME IN TRAVEL, THEY TEND TO EXHIBIT MORE MINIMIZATION THAN INDIFFERENCE. THIS INDEX WHICH PERMITS MEANINGFUL COMPARISONS OF SPATIAL ARRAYS OF URBAN ACTIVITY, SIMULTANEOUSLY STANDARDIZES A SPATIAL DISTRIBUTION OF LINKAGES AGAINST THE TIME MINIMUM AND TIME INDIFFERENT LINKAGE SETS. ADDITIONAL ANALYSIS OF THE HOME AND WORKPLACE LINKAGES ARE PLANNED WITH SPECIAL EMPHASIS ON THE ASSUMPTION OF EQUAL SUBSTITUTABILITY OF JOBS AND RESIDENCES.