Test 1 (HSTRC - TQM) TQM 22/TQM 32 Date of 1 Test: 18th May 2003 (1.00 – 4.00 am) Date of Second Test: 23 August 2003 Line speed: 100 miles per hour Length of test run: 2km approx. HSTRC run: 15th May 2003 Reversed transition curves: Rad. 2000m -3000m Test 2 (HSTRC/TQM/Man. Survey) TQM 22/TQM 32 Date of tests: 18 May 2003 & 23.08. 2003  Line speed: 100 miles per hour Length of test: 2km approx. HSTRC run:03-09-2003 Manual Survey: 25,30 and 31-08-2003 Reversed transition curves: Rad. 2000m - 3000m Track Geometry and Track Quality results comparison Results against HSTRC: [in +/-mm] TQM (2,2) SD 41% diff < 0.5mm or 60% < 2mm TQM (3,2) SD 65% diff < 0.5mm or 81% < 2mm Track geometry results comparison Results against Manual Survey TQM (3,2) SD 77% diff < 2mm

Track Quality results comparison

Track geometry results comparison

Test notes: Test was conducted on a 100 mile per hour Fast Line in a border condition for Short Base Measurement usage (especially for TQM 2m chord configuration - HV readings smaller than 0.2 mm). At the test time the following factors had a negative contribution on the results achieved:
- TQM was not equipped with self cleaning measuring rollers facility 
- There was no “Rigid Base” correction implemented to the observation readings.
- SD Data was processed with a safety margin built into the processing software (TQM is always showing worse result than HSTRC)