Safe Overtaking

[Nzy]

the fact that you won't need 5 car lengths to get your car to come to a complete stop at 100km/h makes the forte a decent car

 

From this thread can see that forte needs more than 5 car lengths to prevent rear end at 100km/h.

[Thedream]

From this thread can see that forte needs more than 5 car lengths to prevent rear end at 100km/h.

 

don't mind me throwing in my skepticism here. The safety distance depends very much on the reaction time of the driver. Just because the car in your example didn't stop within 5 cars' length doesn't mean Kia Forte's cannot stop in time.

 

I would fully agree that your friend should not be driving at such speeds if the safety distance required is so long. But I wouldn't say it's just because of the car.

[Jamesc]

What makes CAR A "JAM BRAKE"? /scratch head

Maybe Car A was road hogging and din want Car B to overtake him?

 

Honda Jazz?

[Good-Carbuyer]

the fact that you won't need 5 car lengths to get your car to come to a complete stop at 100km/h makes the forte a decent car

5 X 4.0metres (assumed car lengeth) = 20 metres. Impressive braking distance. Can share with us where you found the literature/test report?

[Good-Carbuyer]

From this thread can see that forte needs more than 5 car lengths to prevent rear end at 100km/h.

Are you thinking/suspecting the car gets rear-ended often? 1st generation Charade did got rear-ended more often by others as many drivers then did not expect it to brake so well

[Nzy]

Are you thinking/suspecting the car gets rear-ended often? 1st generation Charade did got rear-ended more often by others as many drivers then did not expect it to brake so well

 

Nope. My cousin rear ended someone with his forte. He always leaves about 4-5 car lengths. Guess his reaction time is more than 0.8s. Thats why he hit the guy infront.

[Nzy]

don't mind me throwing in my skepticism here. The safety distance depends very much on the reaction time of the driver. Just because the car in your example didn't stop within 5 cars' length doesn't mean Kia Forte's cannot stop in time.

 

I would fully agree that your friend should not be driving at such speeds if the safety distance required is so long. But I wouldn't say it's just because of the car.

 

Maybe cuz his is a manual car so he cannot use left foot braking so his reaction time is longer. At 5 car lengths u only got around 0.7-0.8s to react. Thats the average time most ppl take to move their leg from the accelerator pedal to the brakes and depress it. So that leaves him with no time to think at all when he see the brake lights of the front car.

[Thedream]

Maybe cuz his is a manual car so he cannot use left foot braking so his reaction time is longer. At 5 car lengths u only got around 0.7-0.8s to react. Thats the average time most ppl take to move their leg from the accelerator pedal to the brakes and depress it. So that leaves him with no time to think at all when he see the brake lights of the front car.

 

we could go on and on, but my last salvo on this is that defensive driving is not just safety distance. some other aspects can help.

- I think there was a thread about not just looking at the car in front, but even the cars in front.

- The car(s) in front can slow down without depressing their brakes (and hence no brake lights). So long as we're concentrating, we should slow down too.

- Distance is one thing. Speed is another. You can be at 5 cars' distance, but are you moving at a faster speed than the car in front? If yes, then your foot could well be above the brake pedal and not the accelerator

- Many other situations where your foot would be above the brake pedal - e.g. if you anticipate someone going to cut into your lane (e.g. swerving) or even a car cutting in front of the car in front, etc.

[Rk98]

So u suggest everybody but Volvo S60.

 

Is this a practical suggestion? Then we sud only see S60 cars on e road.

 

 

unless there are other cars that can auto calculate the car infront...

[Rk98]

There is never any excuse for anyone to purposely jam brake in front of anybody else' car for no good reason.

Just overtake and be on your way.

We already have enough accidents on the road without some ego nut case to endanger someone else' life.

I'll rather meet lousy drivers than dangerous drivers.

 

 

if that is the case.. please avoid lane 1 at all cost.

[Copen]

This thread is pretty informative

[Nzy]

we could go on and on, but my last salvo on this is that defensive driving is not just safety distance. some other aspects can help.

- I think there was a thread about not just looking at the car in front, but even the cars in front.

- The car(s) in front can slow down without depressing their brakes (and hence no brake lights). So long as we're concentrating, we should slow down too.

- Distance is one thing. Speed is another. You can be at 5 cars' distance, but are you moving at a faster speed than the car in front? If yes, then your foot could well be above the brake pedal and not the accelerator

- Many other situations where your foot would be above the brake pedal - e.g. if you anticipate someone going to cut into your lane (e.g. swerving) or even a car cutting in front of the car in front, etc.

 

If u read the first few post I did explain how it happened. He was watching the vehicle that was infront of the car infront of him. Couldn't see more than 2 cars ahead cuz it was a lorry. A large branch fell off the lorry and the car infront jammed his brakes when he saw the branch. My cousin didn't notice the branch fall off the lorry cuz the leaves of the branches were hanging out of the lorry and made it hard to see the branch fall off. Maybe thats why lorries should not be on the first lane. All of them were travelling at constant speed of around 100km/h before the accident.

[Good-Carbuyer]

Nope. My cousin rear ended someone with his forte. He always leaves about 4-5 car lengths. Guess his reaction time is more than 0.8s. Thats why he hit the guy infront.

I though someone else quoted less than 5 cars length to stop from 100km/h (only the braking distance, exclude reaction time) to impress us (laugh). Then what speed was he driving? The road condition?

[Jchuacl]

No need left foot brake also can stop on time if he is alert. And I suppose he is new to manual cars and clutch in when he braked ?

 

I personally witness a BMW on lane 1 next to me at lane 2 on aye who got whacked in the rear by a lancer who was more than 5 car lengths when the BMW came to a stop. At that time which was evening peak hr , the traffic speed was ard 70km/h. The lancer did not even attempt to brake whom I guess was dreaming.

 

 

 

 

Maybe cuz his is a manual car so he cannot use left foot braking so his reaction time is longer. At 5 car lengths u only got around 0.7-0.8s to react. Thats the average time most ppl take to move their leg from the accelerator pedal to the brakes and depress it. So that leaves him with no time to think at all when he see the brake lights of the front car.

 

[Nzy]

No need left foot brake also can stop on time if he is alert. And I suppose he is new to manual cars and clutch in when he braked ?

 

I personally witness a BMW on lane 1 next to me at lane 2 on aye who got whacked in the rear by a lancer who was more than 5 car lengths when the BMW came to a stop. At that time which was evening peak hr , the traffic speed was ard 70km/h. The lancer did not even attempt to brake whom I guess was dreaming.

 

He was alert. His reaction time also quite fast. Just that at 100km/h with only 5 car lengths most ppl's reaction time is definitely not fast enough to do that. Just the movement of ur leg from accelerator pedal to the brake pedal already take up all of ur buffer of 5 car lengths.

[Nzy]

No need left foot brake also can stop on time if he is alert. And I suppose he is new to manual cars and clutch in when he braked ?

 

I personally witness a BMW on lane 1 next to me at lane 2 on aye who got whacked in the rear by a lancer who was more than 5 car lengths when the BMW came to a stop. At that time which was evening peak hr , the traffic speed was ard 70km/h. The lancer did not even attempt to brake whom I guess was dreaming.

 

He didn't clutch in. He let it stall. He was p-plate at that time but in my family cuz we run a transport company all of us started driving at around 15-16. Normally he looks 3-4 cars ahead so although he keep 5 car lengths he still can react in time cuz he see far ahead. For this accident there was no other cars to look out for except for the car directly infront of him.

[Phluvcat]

He didn't clutch in. He let it stall. He was p-plate at that time but in my family cuz we run a transport company all of us started driving at around 15-16. Normally he looks 3-4 cars ahead so although he keep 5 car lengths he still can react in time cuz he see far ahead. For this accident there was no other cars to look out for except for the car directly infront of him.

 

if cannot see far enough (lorry, mpv), keep a greater distance away. if no lateral space in case of emergency, keep greater distance away. if tired from a hard day's work, keep greater distance. rainy day, greater distance.

 

also depends on what is the car in front, whether got wide tyres, BBK, Lambo, etc. that will affect your safety distance too. just imagine a F1 driver jam brake his F1 machine in front, give you 3 second also no use.

 

2s may be a good gauge for most, but there is no hard and fast rule, different people react at different speed, brake differently, judge differently. car also behaves differently.

 

best is on a quiet and empty weekend morning, with sufficient light for safety (to see others and for others to see you), go try e-brake urself, try out your ABS. anyway this is only stopping distance, not counting the car traveling distance you took to react.

 

do not assume ABS will always help to decrease stopping distance in all circumstances.

 

my personal opinion is if you need a total of more than 0.6s to react (i.e. mentally plus place foot on brake pedal only, the moment foot on brake and pressure applied is counted as braking distance), better keep greater distance.

 

I dun have ABS ler, so cannot one shot depress the brake totally...

 

 

[Pisces69]

No confusion. I'm just saying that if you need 10 cars' safety distance, you may want to keep to lanes 2 or 3, or you will have many people "undertaking" you.

 

Dunno leh cos i usually travel at 140kmh n end up i am overtaking e others on lane 1. But many times I am e one hv to 'undertake' those other slow pokes who tailgate n refuse to give way to faster vehicles on lane 1.

 

1Car length fr every 10kmh is e international standard fr driving.

 

Maybe SG very special n hv their own 'standard'. HAHAHA