A driver-invisible speedboard, which can be configured to allow different turnout speeds, ranging from 5 - 1999 units, in either km/h or mp/h. To allow speedboard settings to be persistant on a map, save the settings into a blank 'dummy session', from which new sessions that retain the speedboard settings can be created. Credit to Stryker, for the arrow images in the Surveyor description, and for his Variable Speedboard Script, which was a useful learning aid.