TIME SPEED DISTANCE – REGULARITY RALLY ROADBOOKS

What Is a Time Speed Distance Rally?

TSD (Time/Speed/Distance) rallying, also known as regularity rallying, is a safe, enjoyable but exacting motor sport that fully puts to the test your car's reliability and responsiveness, a driver's ability and a navigator's accuracy in interpreting specific route instructions. A rally is a competition in which cars individually leave a starting point at a carefully recorded time, and are instructed to accurately follow a designated route while maintaining specific various rates of speed along this route.

DISTANCE = TIME X SPEED

TIME = DISTANCE/SPEED

SPEED = DISTANCE/TIME

How to Add Time Speed Distance Function to a Roadbook

Prescribed Speeds are added to the starting Waypoint and again in subsequent waypoints when Speed Changes are requred by Drag and Dropping a Speed Icon (Speed Tab) into the Waypoint

User can display Target Times in any Waypoint by Drag and Dropping TSD TIME Icon into any Waypoint. This can be used to create helpful practice Roadbooks (Example: First Stage of a TSD Rally) or to offer participants a hint of correct time along the way.

Choose Roadbook > Decimal Format > 0,000 in Road Rally format and distances print to three decimals (.000). The TSD worksheet uses the same precision, so crews can hold precise average speeds.

Time controls take target times as hours and minutes (h:mm), and each one prints its own number (TC1A, TC1B…). Running a US event? Turn on Roadbook > Show Alternate Distance Units for km and miles side by side.