Important Instructions for Using Intelligent Speed Assistant (ISA)

Chapter 5 · Manual page 249

ISA, is an assist function, the incorrect speed limit value or no speed limit value may be displayed on the instrument pack due to environmental factors or the system itself, so the driver must always observe the speed limit regulations of the road traffic and MUST adjust their driving speed accordingly. The use of ISA may be limited in the following conditions, but not limited to:

  • The vehicle is driven at a high speed;
  • There are several speed limit signs set up over the road or at the roadside; Currently, the front view camera can only identify the speed limit signs for the lane the car is traveling in, different style speed limit signs, and the speed limit signs with additional information;
  • The speed limit signs set up at the fork in the road, curve and on-ramp/off-ramp;
  • Lane change, etc;
  • Affected by poor lighting conditions, bad weather, non-standardized or sheltered speed limit signs or the camera’s own restrictions, the camera may not recognize all speed limit signs or make errors in recognition (e.g., recognize the weight limit sign as a speed limit sign, recognize the minimum speed sign as the maximum speed sign);
  • The camera cannot identify any text provided below the speed limit sign, such as Auxiliary Lane, 100m Ahead, School Section, 7
    -10
    etc;
  • Some drastic and rapid steering operations of the driver may be judged as changing lane or turning around in the intersection by the system, resulting in the identified speed limit signs being cleared;
  • ISA Function performance relies on the navigation map, to maintain high performance the function maps must be updated periodically through dealers.

The front view camera cannot identify the speed limit signs painted on a road surface, the driver must observe the speed limit requirements on the road surface in real time. When the vehicle needs to change lane or make a turn or turn around in the intersection, if the driver operates the direction indicator switch in advance and slows down, the original speed limit value on the instrument pack will be cleared until a new speed limit sign is detected; if such conditions are not met, the original speed limit value will be kept. The driver should make any judgments at their discretion.