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Technical Details
How Safety Radar Works
Safety Warning System, or SWS, uses a
modified K-band radar signal. The SWS safety
radar system has 64 possible messages (60
currently allocated). The SWS messages
your V940 can display are listed on the
facing page.
From the factory, your V940 is
programmed with SWS decoding OFF. If
SWS is used in your area, your V940 will
display the safety messages associated with
the signal. If you wish to detect this system,
use the Programming feature to turn the
V940’s SWS decoding ON.
NOTE: Some of the safety messages
have been condensed, so that each message
can be displayed on one or two screens on
the V940’s eight-character display.
Since Safety radar technology is
relatively new, and the number of
transmitters in operation is not yet wide-
spread, you will not receive Safety signals
on a daily basis. Do not be surprised if you
encounter emergency vehicles, road
hazards and railroad crossings that are
unequipped with these transmitters. As
Safety transmitters become more prevalent
(the number of operating transmitters is
growing every day), these Safety radar
signals will become more common.
SWS Text Messages
Highway Construction or Maintenance
1
Work Zone Ahead
2
Road Closed Ahead/Follow Detour
3
Bridge Closed Ahead/Follow Detour
4
Highway Work Crews Ahead
5
Utility Work Crews Ahead
6
All Traffic Follow Detour Ahead
7
All Trucks Follow Detour Ahead
8
All Traffic Exit Ahead
9
Right Lane Closed Ahead
10
Center Lane Closed Ahead
11
Left Lane Closed Ahead
12
For future use
Highway Hazard Zone Advisory
13
Stationary Police Vehicle Ahead
14
Train Approaching/At Crossing
15
Low
Overpass Ahead
16
Drawbridge Up
17
Observe Drawbridge Weight Limit
18
Rock Slide Area Ahead
19
School Zone Ahead
20
Road Narrows Ahead
21
Sharp Curve Ahead
22
Pedestrian Crossing Ahead
23
Deer/Moose Crossing
24
Blind/Deaf Child Area
25
Steep Grade Ahead/Truck Use Low Gear
26
Accident Ahead
27
Poor Road Surface Ahead
28
School Bus Loading/Unloading
29
No Passing Zone
30
Dangerous Intersection Ahead
31
Stationary Emergency Vehicle Ahead
32
For future use
Weather Related Hazards
33
High Wind Ahead
34
Severe Weather Ahead
35
Heavy Fog Ahead
36
High Water/Flooding Ahead
37
Ice On Bridge Ahead
38
Ice On Road Ahead
39
Blowing Dust Ahead
40
Blowing Sand Ahead
41
Blinding Snow Whiteout Ahead
42
For future use
Travel Information/Convenience
43
Rest Area Ahead
44
Rest Area With Service Ahead
45
24 Hour Fuel Service Ahead
46
Inspection Station Open
47
Inspection Station Closed
48
Reduced Speed Area Ahead
49
Speed Limit Enforced
50
Hazardous Materials Exit Ahead
51
Congestion Ahead/Expect Delay
52
Expect 10 Minute Delay
53
Expect 20 Minute Delay
54
Expect 30 Minute Delay
55
Expect 1 Hour Delay
56
Traffic Alert/Tune AM Radio
57
Pay
Toll Ahead
58
Trucks Exit Right
59
Trucks Exit Left
60
For future use
Fast/Slow Moving Vehicles
61
Emergency Vehicle In Transit
62
Police In Pursuit
63
Oversize Vehicle In Transit
64
Slow Moving Vehicle
