Chart 1:

Tennessee: MP3 Rest Area

Figure 1: Modeling Process for Estimating Rest Area Truck Parking Spaces

Source: Apogee Research, Inc.

 Table E1: Identification (Step 1) (1) Identification Number (2) County (3) Interstate (4) Milepost (5) ADT (6) DPRV (7) DINT (8) Welcome Center (9) Type of Space (10) Food Facilites (11) Adequate Lighting (12) Attendant XYZ001 XYZ002 XYZ003 County A County B County C Z-1 Z-2 Z-3 138 63 41 8,650 16,565 31,100 74 42 54 8.5 13.3 7.6 Yes No No DPT P DNPT Yes Yes No No Yes No No No Yes

 Table E2: Data Entry (Step 2) (1) Identification Number (2) County (3) Interstate (4) Milepost (5) ADT (6) DPRV (7) DINT (8) Welcome Center (9) Type of Space (10) Food Facilites (11) Adequate Lighting (12) Attendant XYZ001 XYZ002 XYZ003 County A County B County C Z-1 Z-2 Z-3 138 63 41 8,650 16,565 31,100 74 42 54 8.5 13.3 7.6 Yes No No DPT P DNPT Yes Yes No No Yes No No No Yes

Abbreviations Used:
DPRV = Distance from previous rest area
DINT = Distance to the next interchange
DPT = Diagonal pull-through parking spaces
DNPT = Diagonal not-pull-through parking spaces
P = Parallel parking spaces

 Table E3: Data Recoding (Step 2 Contd.) (1) Identification Number (2) County (3) Interstate (4) Milepost (5) ADT (6) DPRV (7) DINT (8) Welcome Center (9) Type of Space (10) Food Facilites (11) Adequate Lighting (12) Attendant XYZ001 XYZ002 XYZ003 County A County B County C Z-1 Z-2 Z-3 138 63 41 8,650 16,565 31,100 1 0 1 0 1 0 1 0 0 1 0 0 1 1 0 0 1 0 0 0 1

 Table E4: Application of Decision Rules (Step 3) Rest Area Parameter Values P DH Dt PF VHS XYZ001 XYZ002 XYZ003 0.16 0.15 0.14 0.15 0.1 0.075 0.25 0.25 0.25 1.8 1.8 1.8 2.0 2.0 2.0

Table E5: Estimation of Truck Parking Spaces (Step 4)

Base Estimation Formula

 NTSPACES = ADT x P x DH x Dt x PF VHS

 Rest Area Formula Inputs Estimated Spaces XYZ001 NTSPACES = 8.650 x 0.16 x 0.15 x 0.25 x 1.8 2.0 47 XYZ002 NTSPACES = 16.565 x 0.15 x 0.10 x 0.25 x 1.8 2.0 56 XYZ003 NTSPACES = 31,100 x 0.14 x 0.075 x 0.25 x 1.8 2.0 73

Last updated November 12, 1999

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