Sunday, April 3, 2016

article About The logic of traffic lights in Singapore - (all-vga-corner)

Background and facts

In 2 Jun 2011 at around 10pm, 21 year-old National Serviceman Li Jianlin was knocked down by taxi driver, Mdm Asnah, 59 at a pedestrian crossing in Bukit Batok West Avenue 5. He suffered serious head and hip injuries and was hospitalised for 3 months.

The cab's insurer appealed with lawyer Anthony Wee arguing that Mr Li should be 35% to blame for failing to check for approaching traffic as he crossed the second half of the dual carriageway which had a centre divider.  Mr Wee citied rule 20 of Highway Code: "Where a pedestrian crossing has a central refuge, each half is a separate crossing and you should treat it as such."

Judge of Appeal Chao Hick Tin and Justice Quentin Loh pointed to rule 22.  It requires pedestrians at a light controlled crossing to wait on the footway until the traffic in front has come to a standstill. This means those on foot should keep a lookout for errant motorists regardless of how long the lights have turned in favour of the pedestrian, wrote Justice Chao.

Chief Justice dissented and the Court of Appeal decision is 2-1.  The judgement means that when the case is returned to the High Court in September, the sum will be discounted by 15%.

In short, pedestrians who failed to check for incoming traffic at the traffic light junction has a 15% responsibility for any accident.  (Ref: Straits Times news article)

Maths perspective from the pedestrian

PedestrianWatch out for trafficResponsibilityChances of being knocked down
Traffic LightNo15%>0%
Traffic LightYes15%0%
No Traffic lightYes>15%0%
From the perspective of the pedestrian, pedestrians have 0% or no chance of being knocked down if we watch out for all incoming traffic before we cross at traffic light junction.  But if we fail to watch out of traffic and was knocked down by any vehicle who is speeding and beating red lights, pedestrians are accountable for 15% at traffic light junctions.

Maths perspective from the driver


DriverBeat Traffic LightResponsibilityChances of knocking down someone
Traffic LightNo85%0%
Traffic LightYes85%>0%
No Traffic LightNo<85 td="">>0%
From the perspective of the driver, there is no chance to knock down someone if they do not beat red light.  Even if they beat red lights and knock someone down, they are only 85% responsible for the accident.  As such, it is logical to deduce that when accidents occur at non-traffic light junctions, the responsibility of the drivers should be less than 85% because pedestrians fail to cross at traffic light junctions or they may be jay-walking.

Conclusions

Understanding the perspectives of both parties, it is apparent the following questions remain:
  1. From the pedestrian's argument, why do we need to install traffic lights if it is safer to cross the road at non-traffic light junctions since the key to safe crossing is watch out for incoming traffic?
  2. From the driver's argument, it is okay to beat traffic lights as the pedestrian bear 15% responsibility if accident occurs.  In most cases, the driver is 100% responsible for knocking down someone in non-traffic light junctions.  Again, why do we need to build traffic light?
The decision of the Court of Appeal will set precedence for future accident claims and if pedestrians cannot cross traffic light safely when they see the green man, they should try to cross the road when they see red man.  They just need to watch left, watch right and watch left again, to make sure no policeman or vehicle is coming for them!

Monday, March 21, 2016

article About What you need to know about TV boxes - (all-vga-corner)

Watch TV channels or movies online

Internet has changed our lifestyle and watching TV channels and movies are some of the benefits offered by high speed internet. You can no longer stick to the schedule offered by the broadcasting station and you can access to other channels in other countries.  A whole array of products offer to keep you entertained but it is tough to select the best product based on your needs. This page aims to simply and demystify the haze.

Conventional methods of watching TV

Broadcasting stations in your country wanted you to buy their cable and charge your monthly or per movie.  This is one of the most convenient and also the highly expensive way of watching movies or TV programs.  In Singapore, Starhub offers 65 channels for a monthly fee of S$26.75 while Singtel offers 90 channels for a monthly fee of S$34.90.  You can watch clear and lossless frame via your huge LED TV.  Why this is expensive?  The reason is blatantly clear.  You cannot watch more than 2 stations simultaneously so why are you paying for 60 over channels.  Most of these program are recycled many times in the month so effectively, you cannot watch what you want and may watch more than you wanted.  Next come our alternative....Mobile Apps.

TV Applications

You can download and watch TV channels via your mobile phone.  The drawbacks are the apps may not be trustworthy (or worst infested with virus/spyware) and the application is not be updated.  If the application can work successfully, you are bound to watch the show through the small 5.5" screen of your mobile device (worst for iPhone users).  The permanent damage to your eyes far outweighs the benefits of catching your favourite TV shows or movies.

TV Box

The best and least expensive way is to watch it via your LED TV with a dedicated TV box.  In short, there are 2 types of different TV boxes.  TV boxes that costs S$50 to S$150 come with no server in the backend and TV boxes that comes with server will cost S$250 or more.  Why servers are important?  They are the guaranteed sources of programs and movies offered by the TV box manufacturers so you do not have to find different sources to install.  If the server is shut down due to local policy, you may lose all the rights to access the server and your TV box will cess to work.  It happened to some TV boxes and consumers are fooled into thinking it is a one-time investment.  When the market is saturated, the manufacturer will convert the TV box into a monthly or yearly subscriptions basis and expect consumers to foot the bill.  This caused many unnecessary stress and unhappiness for consumers.

Conclusions

In short, there is no free lunch in this world and manufacturers are motivated to provide movies and programs based on profit.  Do not be fooled into believing the server will last forever as government policy will change due to the pressure of the film makers as most of these movies are pirated versions from the cinemas.  As long as you do not download these movies, it is legal (at least for the moment) for you to watch what is online just like you watch youtube.  Afterall, the internet does not belong to any country or any organisation.