Channel Name Definitions - Ref A to Road Lines
| Channel Name | Description | Unit |
|---|---|---|
|
RangeA-L1 |
The lateral distance between Line Reference Point A to Line 1. This channel is measured perpendicularly to the surveyed line.
|
m |
| TTCA-L1 |
The Time To Cross of Line Reference Point A crossing Line 1 given the vehicle's current lateral speed towards the line.
|
s |
| LatSpdsvA-L1 |
The Lateral Speed of Line Reference Point A towards Line 1.
|
kmh |
| AnglesvA-L1 |
The Angle between Line Reference Point A and the tangent of Line 1.
|
° |
| Status-sv |
The DGPS Status of the Subject Vehicle.
|
|
| CurvatureL1-A | The Curvature of Line 1 at the point closest to Line Reference Point A. | 1/m |
| RangeA-L2 |
The lateral distance between Line Reference Point A to Line 2. This channel is measured perpendicularly to the surveyed line.
|
m |
| TTCA-L2 |
The Time To Cross of Line Reference Point A crossing Line 2 given the vehicle's current lateral speed towards the line.
|
s |
| LatSpdsvA-L2 |
The Lateral Speed of Line Reference Point A towards Line 2.
|
kmh |
| AnglesvA-L2 |
The Angle between Line Reference Point A and the tangent of Line 2.
|
° |
| CurvatureL2-A | The Curvature of Line 2 at the point closest to Line Reference Point A. | 1/m |
| RangeA-L3 |
This channel is measured perpendicularly to the surveyed line.
|
m |
| TTCA-L3 |
The Time To Cross of Line Reference Point A crossing Line 3 given the vehicle's current lateral speed towards the line.
|
s |
| LatSpdsvA-L3 |
The Lateral Speed of Line Reference Point A towards Line 3.
|
kmh |
| AnglesvA-L3 |
The Angle between the Line Reference Point A and the tangent of Line 3.
|
° |
| Curvature3-A | The Curvature of Line 3 at the point closest to Line Reference Point A. | 1/m |
The lateral distance between Line Reference Point A to Line 3.
Determining Range From a Curved Line
When testing around a curved lane, the VBOX firmware takes measurements from the corner position to the nearest perpendicular tangent line to the curved lane edge, as shown below.
