If you stop on a two-lane road carrying traffic inboth directions or on an undivided highway,place warning devices within 10 feet of the frontor rear corners to mark the location of thevehicle and 100 feet behind and ahead of thevehicle, on the shoulder or in the lane youstopped in. See Figure 2.9.Figure 2.9Back beyond any hill, curve, or other obstructionthat prevents other drivers from seeing the vehiclewithin 500 feet. If line of sight view is obstructeddue to hill or curve, move the rear-most triangle toa point back down the road so warning is provided.See Figure 2.10.Figure 2.10When putting out the triangles, hold them betweenyourself and the oncoming traffic for your ownsafety. (So other drivers can see you.)Use Your Horn When Needed.Your horn can letothers know you're there. It can help to avoid acrash. Use your horn when needed. However, itcan startle others and could be dangerous whenused unnecessarily.2.6 – Controlling SpeedDriving too fast is a major cause of fatal crashes.You must adjust your speed depending on drivingconditions. These include traction, curves, visibility,traffic and hills.2.6.1 – Stopping DistancePerceptionDistance+ReactionDistance+Braking Distance = Total Stopping DistancePerception distance.The distance your vehicletravels, in ideal conditions; from the time your eyessee a hazard until your brain recognizes it.Keepin mind certain mental and physical conditions canaffect your perception distance.It can be affectedgreatly depending on visibility and the hazard itself.The average perception time for an alert driver is1¾ seconds.At 55 mph this accounts for 142 feettraveled.Reaction distance.The distance you willcontinue to travel, in ideal conditions; before youphysically hit the brakes, in response to a hazardseen ahead.The average driver has a reactiontime of ¾ second to 1 second.At 55 mph thisaccounts for 61 feet traveled.
