1. SCENE MEASUREMENT
Intersection, by Alex Abboud, retrieved from: http://www.flickr.com/photos/alexabboud/3944972522
Photo is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License.
1

2. SCENE MEASUREMENT
COORDINATE METHOD
Establish a reference point (RP)
• Something that likely will not move
• Utility Pole
• Fire Hydrant
• Guard Rail
Establish a base line
• Take first measurement along base line
• Take second measurement at 90 angle from base line
2

3. SCENE MEASUREMENT
COORDINATE METHOD
N
V1
RP Base Line
# Point Measured E/W N/S
1 Right Rear Tire V1 10.5 E 8.7 N
3

4. SCENE MEASUREMENT
TRIANGULATION METHOD
Establish 2 reference points (RP1)(RP2)
• Something that likely will not move
• Utility Pole
• Fire Hydrant
• Guard Rail
Measure from each RP to the desired point and record the
measurements
Measure and record the distance between the RPs
4

5. SCENE MEASUREMENT
TRIANGULATION METHOD
V1
RP1 RP2
# Point Measured RP1 RP2
1 Right Rear Tire V1 94 157
5

6. SCENE MEASUREMENT
TRIANGULATION METHOD
Preferred
RP RP
1 2
Avoid
RP RP
6
1 2