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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 V955 can display are listed on the
facing page.
From the factory, your V955 is
programmed with SWS decoding OFF. If
SWS is used in your area, your V955 will
display the safety messages associated with
the signal. If you wish to detect this system,
use the Programming feature to turn the
V955’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 V955’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