Bureau of Transportation Statistics (BTS)

Table 1
Summary of Hardware Used in the MMSs

Collection method GPS receiver Digital camera (pixel resolution) INS DMI
MMS1 Trimble 7400 Pulnix (7682484)* Litton* Daytron*
MMS2 Ashtech Z-12 COHO 4980 RS-170 (6402480) Honeywell Laser Ref III Vehicle ABS
MMS3 Novatel* Sony XC-007 (6402480) INS with 3 gyros and 2 accelerometers Vehicle ABS
MMS4 Leica MX 9212 Sony DXC 9000 (5592494) Litton Laser Gyro Hengstler R158-T/1800

*Exact make or model is proprietary information.
INS = inertial navigation system
DMI = distance measuring instrument


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