2.1. Be compliant with ASTM E-1911-98 standard test method for measuring paved surface frictional properties. 2.2. Operate with a Windows PC using Windows 10 or later with a USB connection. 2.3. Be easy to carry and transportable by passenger vehicles. 2.4. Be capable of use in narrow spaces and able to measure slip resistance of road surfaces in a single measurement. 2.5. Have built-in functions to measure the relationship between friction and speed with direct output. 2.6. Provide easy and immediate graphical display and analysis of measured data. 2.7. Include an attached water tank for automatic watering. 2.8. Include ten (10) sets of rubber sliders made of material that comply with ASTM E501 and E524 tires. 2.9. Include a thickness gauge that indicates at a glance when rubber slider needs to be replaced. 2.10. Operate with 12V DC power supply. 2.11. Have the following body dimensions: 2.11.1. Length: Maximum 405 mm. 2.11.2. Width: Maximum 510 mm. 2.11.3. Height: Maximum 310 mm. 2.12. Be a maximum gross weight of 34 kg. 2.13. Have a measuring speed between 10km/h and 80km/h. 2.14. Include operating software, power cable, USB cable, spare fuse (20A), water supply tank, and hose that connects the water supply tank to the DFT.
