Speed Control
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 2000W SCR Electronic Voltage Regulator Dimming Dimmers Speed Control Thermostat $10.00 Time Remaining: 6d 23h 38m Buy It Now for only: $10.00 |
 2000W Voltage Regulator Dimming Dimmer Light Speed Temperature Control 03599 $0.99 Time Remaining: 1d 6h 10m |
 110V SCR Electronic DIY Motor Speed Controller Dimmer Controls Temperature 3000W $16.20 Time Remaining: 16d 23h 58m Buy It Now for only: $16.20 |
 3000W SCR Electronic Speed Control Thermostat Voltage Regulator Dimmers Dimming $12.00 Time Remaining: 22d 23h 47m Buy It Now for only: $12.00 |
 NIB MULTI SPEED WALL MOUNT SPEED CONTROL SWITCH 115V LT 30 $9.99 Time Remaining: 20d 4h 1m Buy It Now for only: $9.99 |
 Pump Controller Solar Hot Water Heater w Pump 110V Controller 3 speed 3 sensors $339.15 Time Remaining: 7d 20h 46m Buy It Now for only: $339.15 |
 Thermostat 3000W SCR Voltage Regulator Dimmer Dimming Speed Control Electronic $12.29 Time Remaining: 17d 5h 48m Buy It Now for only: $12.29 |
 Ceiling Fan Speed Control Switch Wall Button AC220V New $8.00 Time Remaining: 20d 14h 17m Buy It Now for only: $8.00 |
 Lutron DIVA 3 speed Ceiling Fan Controler Almond Decor style $7.95 Time Remaining: 2d 11m Buy It Now for only: $10.00 |
 3000W SCR Electronic Voltage Regulator Dimmers Dimming Speed Control Thermostat $12.00 Time Remaining: 22d 23h 37m Buy It Now for only: $12.00 |
 Cooper Rotary Fan Speed Control Switch 3 Speed Control $6.49 Time Remaining: 12d 56m Buy It Now for only: $6.49 |
 All Fan Hunter Fan 27181 All Fan Four Speed Slide Control $15.00 Time Remaining: 29d 23h 32m Buy It Now for only: $15.00 |
 Hunter 3 Speed Stepped Control for Hunter Original Fans 22691 $15.00 Time Remaining: 29d 23h 45m Buy It Now for only: $15.00 |
 3000W SCR Electronic Voltage Regulator Dimming Light Speed Temperature Control $5.98 Time Remaining: 29d 21h 58m Buy It Now for only: $5.98 |
 Cooper 6425V K Ceiling Fan Speed Control Slide Dimmer w Preset Feature $6.49 Time Remaining: 16d 4h 30m Buy It Now for only: $6.49 |
 2000W Voltage Regulator Dimming Dimmer Light Speed Temperature Control 03599 $8.69 Time Remaining: 10h 44m Buy It Now for only: $8.69 |
 10 Variable Fan Speed Controls 17001 W Fan Switch Light Dimmer Switch Combo $103.00 Time Remaining: 2d 4h 16m |
 HUNTER ALL FAN CEILING FAN LIGHT CONTROL FOR ALL BRANDS 4 SPEED 27183 $16.00 Time Remaining: 29d 23h 54m Buy It Now for only: $16.00 |
 SIX New Eagle 6425V K Ceiling Fan Speed Control Slide Dimmer Preset light switch $9.70 Time Remaining: 8d 9h 57m Buy It Now for only: $9.70 |
 2 Speed Fan Control Switch White 1221 W $33.88 Time Remaining: 11d 2h 42m Buy It Now for only: $33.88 |
 P S 94003WV ROTARY FAN SPEED CONTROL 15 AMP $7.20 Time Remaining: 11d 1h 31m Buy It Now for only: $7.20 |
 NEW COOPER 3 Speed Quiet Fan Control Rotary Dimmer White 6008W K On Off 6008 $3.39 Time Remaining: 25d 10h 1m Buy It Now for only: $3.39 |
 NEW 3speed Ceiling Fan Switch Pack Fan Control Switches 7707500 030721770753 $11.49 Time Remaining: 25d 20h 39m Buy It Now for only: $11.49 |
 Lutron nfs 6e bl fan speed control $18.00 Time Remaining: 3d 7h 39m Buy It Now for only: $28.00 |
 6 LEVITON DECORA 15 AMP QUIET FAN SPEED CONTROL ALMOND $4.99 Time Remaining: 2d 4h 38m Buy It Now for only: $4.99 |
 3800W SCR Electronic Voltage Regulator Dimming Dimmers Speed Control Thermostat $14.60 Time Remaining: 9d 23h 35m Buy It Now for only: $14.60 |
 Variable Slide Fan Speed Control Light Switch 17002 W Fan Switch Energy Saver $10.66 Time Remaining: 6d 10h 21m Buy It Now for only: $10.66 |
 COMBO PADDLE FAN 15A 3 SPEED CONTROL LIGHT 600W SLIDE DIMMER WHITE $13.95 Time Remaining: 6d 3h 48m Buy It Now for only: $13.95 |
 Rotary 3 Speed Fan Speed Control 17003 W Ceiling Fan Switch Fan Control $6.71 Time Remaining: 13d 6h 9m Buy It Now for only: $6.71 |
 Variable Ceiling Fan Speed Control Light Dimmer Switch Combo 17001 White $12.00 Time Remaining: 18d 37m Buy It Now for only: $12.00 |
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 Lutron nfs 6e bl fan speed control $18.00 Time Remaining: 3d 7h 41m Buy It Now for only: $28.00 |
 Lutron FSQ 2FH IV Rotary Quiet 3 Speed Fan Control Single Pole 15A $7.99 Time Remaining: 23h 32m Buy It Now for only: $7.99 |
 2PC Rotary 3 Speed Fan Speed Control 17003 W Ceiling Fan Switch Fan Control $13.20 Time Remaining: 1d 21h 46m Buy It Now for only: $13.20 |
 Variable Slide Ceiling Fan Speed Control Switch Light Dimmer Switch 17001 A $11.65 Time Remaining: 1d 7h 11m Buy It Now for only: $11.65 |
 Monte Carlo ESSWC 3 AL 4 Speed 5 Position 125 Amp Wall Control Almond $14.95 Time Remaining: 27d 4h 34m Buy It Now for only: $14.95 |
 Fantech Variable Speed Controller SCD 5 $56.00 Time Remaining: 23h 42m Buy It Now for only: $56.00 |
 NEW 3 Speed Ceiling Fan Switch Pack Fan Control Switches 7702100 030721770210 $11.01 Time Remaining: 18d 11h 40m Buy It Now for only: $11.01 |
 Lutron SFSQ LFH WH Slide To Off Fan Speed Control with On Off Light Switch White $13.99 Time Remaining: 5d 18h 17m |
 3000W Voltage Regulator Dimming Dimmer Light Speed Temperature Control 03601 $8.54 Time Remaining: 27d 10h 44m Buy It Now for only: $8.54 |
 COOPER Fan Speed Control Slide Dimmer Switch White Single Pole 6425W $5.09 Time Remaining: 10d 11h 56m Buy It Now for only: $5.09 |
 NEW COOPER Brand Fan Speed Slide Control Slider Dimmer White 6426W K C $3.82 Time Remaining: 25d 10h 1m Buy It Now for only: $3.82 |
 2000W Voltage Regulator Dimming Dimmer Light Speed Temperature Control 03599 $8.69 Time Remaining: 7d 16h 47m Buy It Now for only: $8.69 |
 Variable Slide Fan Speed Control 5A Fan Switch Energy Saver Fan Control 17000 A $7.30 Time Remaining: 7d 54m Buy It Now for only: $7.30 |
 Leviton White Ivory Almond Vizia Fan Speed Control $24.95 Time Remaining: 27d 1h 10m Buy It Now for only: $24.95 |
 3000W Voltage Regulator Dimming Dimmer Light Speed Temperature Control 03601 $8.99 Time Remaining: 7d 18h 47m Buy It Now for only: $8.99 |
 Ceiling Fan Speed Control Switch Wall Button AC220V New $0.99 Time Remaining: 19h 43m |
 Treadmill DC Speed Controller Board Samsung MC 20 $30.00 Time Remaining: 22d 2h 58m Buy It Now for only: $30.00 |
 Fan Speed Control Rotation Button Wall Switch White $9.55 Time Remaining: 15d 5h 21m Buy It Now for only: $9.55 |
 Leviton Almond Vizia Dimmer Fan Speed Control Color Kit $3.95 Time Remaining: 8d 4h 36m Buy It Now for only: $3.95 |
 Single Plastic Fan Speed Controler Wall Mount Switch $10.13 Time Remaining: 26d 21h 2m Buy It Now for only: $10.13 |
 Leviton Black Vizia Dimmer Fan Speed Control Color Kit $3.95 Time Remaining: 23d 3h 47m Buy It Now for only: $3.95 |
 NEW Combo 4 Speed Fan Control rota Ea Fan Control Switches RDC15 W K $30.32 Time Remaining: 19d 11h 40m Buy It Now for only: $30.32 |
 3800W SCR Voltage Regulator Dimming dimmers Thermostat Light Speed Control $0.01 (2 Bids) Time Remaining: 7h 39m |
 Leviton Ivory Monet Slide Ceiling Fan Speed Control $79.95 Time Remaining: 26d 11h 6m Buy It Now for only: $79.95 |
 New Cooper 5 Amp Ivory Slide Fan Speed Control Switch 6425V $3.50 Time Remaining: 26d 19h 26m Buy It Now for only: $3.50 |
 Lutron SK WH WHITE Replacement Knob for Skylark Dimmers and Fan Speed Controls $3.99 Time Remaining: 27d 19h 41m Buy It Now for only: $3.99 |
 Leviton Acenti Black Dimmer Fan Speed Control REMOTE $24.95 Time Remaining: 25d 5h 29m Buy It Now for only: $24.95 |
 WIND GENERATOR 400W 12V WIND TURBINE LOW WIND START SPEED + CHARGE CONTROLLER $375.00 Time Remaining: 11d 19h 19m Buy It Now for only: $375.00 |
 Variable Slide Fan Speed Control Light Switch Energy Saver Fan Switch17002 W $10.99 Time Remaining: 11h 24m Buy It Now for only: $10.99 |
 Leviton Brown Vizia Dimmer Fan Speed Control Color Kit $3.95 Time Remaining: 2h 5m Buy It Now for only: $3.95 |
 3800W SCR Dimming Dimmers Speed Controller Thermostat DC Motor Voltage Regulator $0.01 Time Remaining: 1d 8h 41m |
 Lutron Skylark SFSQ LF Fan Speed Controller with Light Switch $14.95 Time Remaining: 11d 2h 48m Buy It Now for only: $14.95 |
 Leviton Ivory Ceiling Fan Speed Control Dimmer Switch $16.95 Time Remaining: 23d 17h 14m Buy It Now for only: $16.95 |
 New Jennfan 3 Amp Electronic Speed Control Ivory Rotary $9.00 Time Remaining: 27d 22h 38m Buy It Now for only: $9.00 |
 Single Plastic Fan Speed Controler Wall Mount Switch $10.14 Time Remaining: 4d 7h 24m Buy It Now for only: $10.14 |
 Leviton Ivory Ceiling Fan Speed Control Dimmer Switch $16.95 Time Remaining: 22h 21m Buy It Now for only: $16.95 |
 Leviton Almond Ceiling Fan Speed Control Dimmer Switch $13.95 Time Remaining: 20d 1h 13m Buy It Now for only: $13.95 |
 3800W SCR Voltage Regulator Dimming dimmers Thermostat Light Speed Control $0.01 Time Remaining: 2d 7h 46m |
 Variable Slide Fan Speed Control 5A Fan Switch 17000 I Energy Saver Fan Control $8.25 Time Remaining: 11d 38m Buy It Now for only: $8.25 |
 LUTRON SFSQ FH IV Skylark 3 Speed Fan Control Ivory $15.00 Time Remaining: 27d 9h 9m Buy It Now for only: $15.00 |
 Leviton Acenti Slate Dimmer Fan Speed Control REMOTE $24.95 Time Remaining: 25d 5h 40m Buy It Now for only: $24.95 |
 Lutron SK AL ALMOND Replacement Knob for Skylark Dimmers and Fan Speed Controls $3.99 Time Remaining: 27d 19h 9m Buy It Now for only: $3.99 |
 Schaefer Manual Variable Speed Control H 230 $104.88 Time Remaining: 21d 12h 27m Buy It Now for only: $104.88 |
 Schaefer Manual Variable Speed Control H 115 $103.88 Time Remaining: 21d 12h 27m Buy It Now for only: $103.88 |
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Car Crash Severity and Changes in Speed Rate
The Federal Highway Administration reports evidence that crash risk increases for vehicles traveling much faster or slower than average and is lowest near the average speed of traffic. The occurrence of a large number of crashes involving turning maneuver partly explains the increased risk for motorists traveling slower than average and confirms the importance of safety programs involving turn lanes, access control, grade separation, and other measures to reduce conflicts resulting from large differences in travel speeds. When the consequences of crashes are taken into account, the risk of being involved in an injury crash is lowest for vehicles that travel near the median speed or slower and increases exponentially for motorists traveling much faster. One of the major concerns in studies is the travel speed before the crash. Emerging technology used in mayday, vehicle tracking, and adaptive speed control systems provide the opportunity to accurately and continuously capture travel speed. This technology should be applied in improving our understanding of the relationship between speed, speed variation, and safety.
When a crash occurs, its severity depends on the change in speed of the vehicle at impact. The fatality risk increases with the change in speed to the fourth power. International research indicates the change in injury crashes will be twice the percentage change in speed squared, and fatal crashes will be four times the percentage change in speed. These relationships are based mainly on speed limit and speed changes on high-speed roads. More research is needed to assess their applicability to low-speed urban roads.
In general, changing speed limits on low and moderate speed roads appears to have little or no effect on speed and thus little or no effect on crashes. This suggests that drivers travel at speeds they feel are reasonable and safe for the road and traffic regardless of the posted limit. However, on freeways and other high-speed roads, speed limit increases generally lead to higher speeds and crashes. The change in speed is roughly one-fourth the change in speed limit. Results from international studies suggest that for every 1 mi/h change in speed, injury accidents will change by 5 percent (3 percent for every 1km/h). However there is limited evidence that suggests the net effect of speed limits may be positive on a system wide basis. More research is needed to evaluate the net safety effect of speed limit changes.
Most of the speed related crashes involve speed too fast for conditions. This would suggest that variable speed limits that adjust with traffic and environmental conditions could provide potential benefits.
Despite the large number of references concerning traffic calming, very few reports include results of a systematic evaluation. In many cases traffic volumes as well as speed are reduced. As a result of the traffic diversion, crashes may be migrating to other roads. More research is needed to assess the system wide impacts and permit comparisons to be made among individual as well as combinations of traffic calming measures
About the Author
Attorney James W. Dodson is a Clearwater, Florida personal injury trial lawyer with over 20 years experience representing clients in all types of injury claims including vehicle accidents, fall cases and wrongful death. He is the author of three books offered FREE to consumers as a guide to dealing with accidents and insurance. Visit his website at JWDodsonLaw.com for FREE copies of these books, other articles, videos, news and commentary.