The original and most widely used moving platform in the world. It was designed to transport passenger-car sized targets and can perform most maneuvers similar to a real vehicle.
The Perfect Platform for Your Soft Car 360®
High accuracy GPS and flexible software make fast scenario changes easy and repeatable.
Everything You Need to Control Your Soft Car 360®
The DRI Guided Soft Target (GST) test system was developed for the evaluation of safety related Advanced Driver Assistance Systems (ADAS) and Automated Driving Systems. The GST system comprises a hardened, satellite guided (DGPS), self-propelled Low Profile Robotic Vehicle (LPRV, pictured above) which serves as a means of conveyance for a variety of surrogate targets which acts as a realistically moving collision partner, such as the Soft Car 360.
The LPRV, with a top speed of over 50 mph (80 km/h) and braking capabilities of up to 0.8g, is capable of performing most maneuvers that a passenger car can accomplish, allowing it to be used as a surrogate in many different types of scenarios.
Works in All the Testing Scenarios You Need it to
The LPRV and Soft Car 360 are suitable for evaluating virtually any type of safety related crash avoidance driver assistance technology, especially those which require close interaction and precise coordination between two moving vehicles.
- Forward Collision Warning (FCW)
- Crash Imminent Braking (CIB) and Automatic Emergency Braking (AEB)
- Dynamic Brake Support (DBS)
- Emergency Lane Keeping (ELK)
- Adaptive Cruise Control (ACC) systems
- Head-on crash avoidance systems
- Blind Spot Detection (BSD) systems
- Vehicle-to-vehicle (V2V) systems
- Other crash avoidance systems
- Automated Driving Systems
Precision and Control that is Perfect for Testing
The system operates using paired time-space trajectories (one trajectory each for the test vehicle and LPRV) which are loaded into the on-board LPRV processor memory. These time-space trajectories can be changed using custom software to allow for flexibility in designing test scenarios. The positions of the subject vehicle and LPRV are measured continuously using differential GPS. The subject vehicle position is broadcast via a wireless LAN to the LPRV, which compares the measured location of the subject vehicle to the pre-defined test vehicle path. The LPRV then automatically and continuously drives to each position in its own predefined path which corresponds to the measured position of the test vehicle.
In this way, the LPRV and Soft Car 360 can arrive at the predefined impact point at the same moment in time as the test vehicle, replicating the pre-crash motions and collision configuration in a repeatable way. If achieving a target speed at a specified (e.g., impact) point is crucial, the LPRV has an optional mode enabling it to switch automatically to a speed-following mode, when a certain condition in the subject vehicle (e.g., braking, or steering, or warning) occurs or using a spatial trigger (e.g., when it reaches a certain point in the trajectory).
Designed to be Safe
An important aspect of the GST system is that the risks to test personnel and the test vehicle are minimized or eliminated altogether. The low profile nature of the LPRV minimizes the possibility of an impact with the test vehicle structure and body work.
Driving over the LPRV is similar to encountering a roadway speed bump. The design of the LPRV control system incorporates numerous fail safe features to ensure full operator and supervisory control at all times. Detailed operating procedures and protocols are followed to ensure the safety of test personnel and participants.
The movement of the LPRV is coordinated with the test vehicle such that the LPRV follows a pre-defined path up to the point of a collision. In the event of a collision, the Soft Car 360 separates from the LPRV and the test vehicle then drives over the LPRV, minimizing or avoiding risk to test personnel and possible damage to expensive test vehicles.
|Mass and Geometry|
|Payload Capacity (kg)||120||120|
|Overall Height (mm)||124||147|
|Ramp Angles||4.5˚ front/rear, 12.3˚ side||4.5˚ front/rear, 12.3˚ side|
|Max Ground clearance (mm)||30||30|
|Max speed (km/h) with Soft Car body||<80 km/h||<80 km/h|
|Max closing speed at impact (km/h)||>110||>110|
|Longitudinal (g)||+0.11, -0.8||+0.10, -0.8|
|Lateral (g)||±0.8 (peak)||±0.6, (sustained)|
|Path Following Accuracy (cm)||5 cm lateral and longitudinal (typical steady state)||5 cm lateral and longitudinal (typical steady state)|
|Distance per charge (w/Soft Car 360®) (km/h)||6 km at 40 km/h 13.5 km at 20 km/h||6 km at 40 km/h 13.5 km at 20 km/h|
|Remote control range (m)||Up to 1000 m||Up to 1000 m|
|Conflict Types||Rear-end, Head-on, Intersecting path, Crossing Path, V2V, Side Swipe, etc.||Rear-end, Head-on, Intersecting path, Crossing Path, V2V, Side Swipe, etc.|
|Position Measurement Accuracy (cm)||2 cm (Subject vehicle and LPRV)||2 cm (Subject vehicle and LPRV)|
|Turn Radius (m)||<5 m||<5 m|
|Battery charge time||40 – 60 min (for full charge of depleted batteries)||40 – 60 min (for full charge of depleted batteries)|
|Car body reassembly time after crash||5 to 15 minutes||5 to 15 minutes|
|Environmental Specification||Operating Temperature Range: 0‐40 C Dry Conditions (non-condensing)||Operating Temperature Range: 0‐40 C Dry Conditions (non-condensing)|
* Speed up to which the target is aerodynamically stable
This product is covered by US Patent 8,428,863.