Critical Evaluation of Bike/PMI's

Plus:

• The bike looks aesthetically pleasing
• The bike looks like it has a good aerodynamic shape and design 
• The bike is protected securely by the shell

Minus:

• The bike's shell could mean that it's hard to get out of quickly in an emergency or crash
• The nose of the bike is quite pointy, which could lead to damaging whatever the  bike hits head on.

Interesting:

• The colour of the bike looks interesting - is it just the paint or is it the material they used for the outside.

Plus:

• The bike is a bright colour and would be easy to pick out in a crowd.
• Since the window in the front is quite large, there is good visibility for the rider, so they can see what is going on around them and avoid a crash.

Minus:

• The bike is very wide in front, which would increase air resistance and make the bike slower.

Interesting:

• The bike is an interesting and quite unique shape.

Plus:

• If the bike were to be hit by another one, it would be quite protected by the shell.

Minus:

• The bike looks quite large and heavy, as though it would take a lot of energy to pedal along the track fast for many laps.
• The bike is not a very aerodynamic design
• The bike's windows don't look that suitable - they don't look big enough for a proper view.

Interesting:

• The bike is an interesting shape

Plus: 

• Since the bike has no shell, it would be easy to get out of in case of an emergency.
• The bike is not too fat or wide, so the air resistance wouldn't be too high
• Without a shell, the bike would be lighter and easier to pedal.

Minus:

• The bike doesn't have a shell, and in a crash, that could potentially be dangerous.
• The bike does not have adequate lighting or bright enough colours.

Interesting:

• What reason did they have for not putting a shell on their bike?

Critical Evaluation of Above Bike:

The above HPV has both positive and negative points in terms of its' safety, including aspects of visibility, and safety for the driver in the event of an accident or crash. The thing that stands out about this bike is its' lack of frame. The obvious drawback of this is the lack of protection for the driver. If there were to be a crash, the driver would be quite exposed and could get more easily injured in the event of an impact from another HPV, or a rollover of the vehicle. The lack of an outer shell also means that the rider is exposed to the elements. It can be quite unhealthy and unsafe if the rider is exposed to the elements like this while riding. If it were to rain, the rider would get drenched, which is certainly not a good thing while they are doing strenuous exercise such as they would be in the race. Even if there was just a cold wind, it would still be unhealthy for the rider. On the other hand, not having an outer shell on the vehicle does also have some benefits in terms of safety - without a hatch or door having to be opened in order to get out of the bike, it is easier to quickly leave the bike if the need arises. The rider also has an unrestricted view of their surroundings and it would be easier for them to navigate without collisions. At night time, however, the bike’s design would display some flaws. The HPV does not appear to have much (if any) lighting, also, without even a coloured or bright reflective shell, the vehicle would be quite hard to see in the dark. Finally, in terms of speed and aerodynamics, the fact that the bike has no shell means that the vehicle is altogether lighter in weight and would be easier to pedal along, however without a streamlined shell, the air resistance and drag on the bike could potentially be increased.