Ano po ba talaga ang ibig sabihin pag sinabi nating "city/mixed/highway driving"?

[valacirca]

Parang mahirap lang kasing intindihin yung ibang fuel consumption stats pag sinabi lang halimbawa na "taken while city driving."

Kasi may ibang parts ng city na mabilis at maluwag ang traffic. May iba namang parts ng city na mabagal at masikip ang traffic. Nagbabago din ang traffic conditions sa city based on time of day and weather (kung umuulan o hindi). So hindi naman consistent ang traffic conditions ng "city driving" diba?

Isn't it better to classify fuel consumption/economy readings based heavy/moderate/light traffic?

[Retz]

mdyo subjective nga talaga yan kasi hindi naman lahat ng city ay ma traffic. but majority pag sinabing city driving inclusive na ang traffic.

[_Qwerty_]

hindi din naman pareho pareho yung pagsukat sa heavy/moderate/light traffic.. dapat yung km travelled and how long did it took you.. like 20 kms distance took you 1.5 hours.. so that's only around 14kms per hour for 1.5 hours..

[JohnM]

On top of that iba iba din ang weather conditions and driving style. So kahit sabihin mong same heavy traffic pero kung ang drivers ay si hypermiler vs Mr Freeze may diff pa din.

[niky]

On top of that iba iba din ang weather conditions and driving style. So kahit sabihin mong same heavy traffic pero kung ang drivers ay si hypermiler vs Mr Freeze may diff pa din.

Eh, unrealistic ang assumptions ng mga iba. Sasabihin nila... bakit yung "H" o "K" o "F", 7 km/l lang sa traffic, yung "T" kaya mag 11 km/l.

Pero in reality, 11 km/l yun, Sunday morning. Kung heavy traffic din, mga 7 km/l din.

I've driven them all. And while mga iba, yes, medyo malakas sa gas... hindi naman night and day difference. Minsan, 0.5 km/l to 1 km/l lang difference sa isa't isa.

[JohnM]

Eh, unrealistic ang assumptions ng mga iba. Sasabihin nila... bakit yung "H" o "K" o "F", 7 km/l lang sa traffic, yung "T" kaya mag 11 km/l.

Pero in reality, 11 km/l yun, Sunday morning. Kung heavy traffic din, mga 7 km/l din.

Para kay ermats ang "trafik" may tumawid na kalabaw sa kalsada Kaya di nya maintindihan bakit di ako makarating ng airport from San Juan in 15 mins eh ang lapit lang daw nun :hysterical:

[steer]

dapat siguro magkaroon nalang ng standard testing sa isang open race track.


for example at one hour interval each:


car running at 20 kph gets XX kilometers per liter.

car running at 60 kph gets XX kilometers per liter.

car running at 100 kph gets XX kilometers per liter.

car running at 180 kph gets XX kilometers per liter.


kung ganun gagawin then hindi na ganon ka dependent sa traffic and weather conditions.

[JohnM]

Doesn't take into account the TS' main issue: traffic. The stop-and-go is the mileage killer.

[dr. d]

kung ganun gagawin then hindi na ganon ka dependent sa traffic and weather conditions.[/QUOTE]

po! but, how many of us drive to the office daily, with our car running at a constant 20 ( or 60 or 100 kph) on an open race track?
i mean, such testing would and couldn't translate to real or practical driving experience, which is what we all do..

envision the ff: "my car gives me 20 km/li when i run it at a constant 60 kph on an open, no-traffic race track. but in the real world, i do only 10 kpl."
so, do i compute my monthly fuel budget based on the track performance, or on real-life, everyday performance?

[renzo_d10]

Kapag sinabi kasing city, usually incorporated na dun sa idea na yun ang stop and go traffic/situation. Kapag highway naman, long trips at a constant speed. With minimal stop & go situations.

Kapag mixed, tipong nag-highway ka tapos naipit ka rin sa traffic ng matagal.

Lahat naman, kahit light/moderate/heavy traffic, subjective eh. Mas madali pa nga intindihin yung highway/city coz 2 ideas lang siya.

Yun light kasi, pwedeng travel around the city w/ no traffic. For example, around BGC ng madaling araw. Iba pa rin yun than driving * the highway na diretso w/ no traffic din. Di ka naman pwede magmaintain ng 60kph+ speed around BGC

[valacirca]

...but in the real world, i do only 10 kph."

lol. sounds like my daily drive to and from work.

[valacirca]

Lahat naman, kahit light/moderate/heavy traffic, subjective eh.

Which is why it would be better if there were standards in place. The best I think would be average speed. Pero once ma-settle kung anong average speed yung light/moderate/heavy traffic... ang next issue ay kung anong klaseng travel naman yun: 20kph nga, pero ano yung 20kph na yun... constant 20kph? o halo nang mabilis at mabagal na stretches? Because the latter would be less fuel efficient than the former.

Mas madali pa nga intindihin yung highway/city coz 2 ideas lang siya.

I beg to differ. Kung mahirap intindihin yung light/moderate/heavy traffic dahil subjective siya, mas mahirap pa lalong intindihin yung pinaghalu-halo mo lahat ng subjectivity na yun sa isang generalization na tinatawag na "city driving."

[renzo_d10]

Can't tell the average speed if you don't have a MID in your car that tells you your average speed during one of your trips. You can't also assume what your speed was because you don't look at your speedometer over & over again.

Mas madali siguro kung combined yun ideas. For example, city driving but with very heavy traffic (insert details here) or city driving but with light traffic (insert details here)

Kasi yun nga, you can't just have three conditions -- light, moderate, heavy. Kasi kahit gaano ka-light yung traffic around the Metropolis, iba pa rin results niya from what you'll get on a steady pace * the highway.

[Noel Salisipan]

Isn't it better to classify fuel consumption/economy readings based heavy/moderate/light traffic?

Iki-clasify naman yan ng mga Tsikoter lalo na yung mga skeptic, yung mga mas nakakaintindi, at mas gusto ang detail presentation.

Yung iba naman simple lang ang details, so assume mo na normal driving habit.

Meron din namang binibigay na standard ang mga manufacturer, critics, reviews... Good to start din yun for initial refference.

Finally, it's up to you kung ano mga standard ang gusto mong gamitin!

[steer]

kung ganun gagawin then hindi na ganon ka dependent sa traffic and weather conditions.

po! but, how many of us drive to the office daily, with our car running at a constant 20 ( or 60 or 100 kph) on an open race track?
i mean, such testing would and couldn't translate to real or practical driving experience, which is what we all do..

envision the ff: "my car gives me 20 km/li when i run it at a constant 60 kph on an open, no-traffic race track. but in the real world, i do only 10 kpl."
so, do i compute my monthly fuel budget based on the track performance, or on real-life, everyday performance?[/QUOTE]



my suggestion was based on the fact that the environment should be the same when testing vehicles, hence testing it on a open track.


of course, the ideal test would be on real traffic, but how can you test several cars on a constant environment, when the traffic is variable.

If you test vehicle A now and record fuel consumption, by the time you test vehicle B, live traffic would have been different when vehicle A was tested.

[Manilablock]

ang bottom line lang dito ay katangap tangap ba na ang FC mo na napakataas compared sa FC (similar car) na-post ng ka-tsikoter.

pero ang natutuhan ko lang, did you enjoy your drive or did you wish nag commute ka na lang

Siguro mas clear kung ganito ang post:

Ang FC ng RAV4 4x4 AT Gen2 ko ay 6.5km/l (average)
Mon-Friday Las Pinas-Sucat-Villamor-Skyway-Makati (and back) 1-1.5hr drive pag umaga pero sa gabi 2hrs min.
Sat-Sun long drive (bulacan, cavite or tagaytay)

[Retz]

average speed in city driving is only 10-40km/hr. sa macapagal lang ako humahataw pero 60km/hr lang.

[JohnM]

One thing to add to the equation: driver mood.

Cue the Mythbusters:
http://videos.howstuffworks.com/disc...-men-video.htm

Results? Driving angry takes its toll on your wallet

[niky]

We are proposing for the PCOTY a fuel economy test on the racetrack with a target lap time, sections where you have to hold 60 kmh, sections where you hold 30 kmh, and sections where you stop.

In testing, economy indicated is equal to light traffic, but it is very difficult to do.

Very hard to simulate traffic. Taking slightly longer to stop or start in one car will build up over several laps.

The best way is to do a dyno test instead of an on-road test. This allows you to vary and spedify load, and to control weather conditions.

[111prez]

For me, since I have an MID, I base it on average speed.

This takes care of the issue on whether or not it is city/highway/mixed driving.

It does not however consider uphill or downhill routes.