Showing posts with label road train. Show all posts
Showing posts with label road train. Show all posts

Tuesday, 17 September 2013

Segways on the footpaths.

It's really funny that now that I'm working with heavy vehicles and dealing everyday with road access to some of the largest vehicles in Australia like ABB quads, the smallest of transportation vehicles caught my attention.


I am talking about Segways in Brisbane and electric bikes/scooters in the Gold Coast.  Just recently Queensland government announced that from 1 August 2013, approved Personal Mobility Devices (PMD) can be used on road related areas such as footpaths, bike paths and shared paths. At the moment Segway is the only PMD that has been approved but other similar devices like gyro-stabilised electric unicycles can be approved and until then can only be operated on private property.

There are certain conditions under which Segways are allowed to operate in Queensland. Those include among others the use of helmet (no surprises there), give way to pedestrians and having a warning device as a bell or horn. There is a speed restriction of 12km/h and you shouldn't be driving past a "PMD prohibited" sign.


Queensland police has adopted Segways on a 3 month trial for use on Brisbane's South Bank and Cairn's Esplanade. Officers are actually allowed to reach 20k/h when chasing a bad guy.





This whole PMD issue is not really new to Qld and Australia since mobility scooters, motorised disability wheelchairs and electric bicycles were allowed to travel on road and on the footpath for quite some time now. These vehicles need to achieve specific performance based standards and are limited to 200 Watt of power where the new PMD's don't have that limit. Segway seems to have far more power than that.



Other countries around the world allow Segways on the streets and footpaths under various conditions and contrary to the urban myth the inventor of Segway didn't die riding one of his inventions. 

And then, the other day while driving back from the beach at Surfers Paradise I saw a bunch of teenagers lane filtering and even moving from the pavement to the footpath on electric scooters. Those vehicles looked a lot like regular scooters although I noticed that they had pedals. It appears that they are available for hire without a drivers licence and they have less than 200 Watts of power.


They reminded me of my first vehicle the Honda Camino which I used to drive to school everyday between the ages of 16 and 17 back in Kavala Greece before I replaced it with the at the time very popular "ducks" Yamaha Townmate. They both had 50cc petrol engines and you needed a special drivers license issued by Greek Police to drive them.


 
As I said in an older blog post, I believe that scooters and even Personal Mobility Devices can provide better alternatives to urban travel than the car. And while I don't think that we will see a lot of Segways in the next years travelling on our footpaths it is certainly an idea worth exploring.  

Sunday, 10 February 2013

Heavy vehicle transport. More than a kid's dream.

When I was a kid I wanted to be a truck driver when I grew up. But no just any truck driver. I wanted to drive these huge American cab type semi trailers that I saw in the movies and looked so impressive. 


I used to imagine driving across USA in such a truck enjoying the Route 66 scenery. I didn't care too much for the European type Cab Over Engine (flat nose) truck or for routes through German Autobahns and urban traffic. 
Source: Dave Johnson from Arroyo Grande, Ca., U.S.
Back then, the only thing I knew about Australian trucks were the road trains operating in the outback and I couldn't  imagine that one day I would be working with the heavy vehicle industry here. Australia is in fact one of the leading countries in heavy and long vehicles. Multi combination trucks operating not only in the Australian desert but also in the major cities connecting very important nodes and achieving great results in terms of freight transport and overall productivity.

Apart from the regular semi trailer (19 m long with a mass limit of 42.5 t) that can move freely in almost every road in Australia without the need for a special permit, there is a range of longer, heavier vehicles with far greater carrying capacity. B-doubles (B-trains) are up to 25 m long vehicles with a mass limit of up to 68 t operating for more than 25 years in Australia.

Source: VicRoads
B-double - Port of Brisbane
B-doubles have many positive aspects. They are highly efficient vehicles that reduce total lane occupation and  accident exposure. They contribute to reduced heavy vehicle exhaust and noise emissions by performing the same freight task with fewer trucks. B-doubles can carry 160% of the payload of semitrailers so two B-doubles carry the payload of three semitrailers, reducing the number of trips and traffic volume required to move the same amount of freight.  This results in less road wear and reduced congestion, and increased efficiency savings for industries, communities and the economy.  B-doubles also have less impact per tonne of payload carried, saving 32% of the road wear costs that would be associated with semitrailers performing the same freight task.  They have better safety and handling performance, confirmed by accident statistics which show they are under-represented in heavy vehicle crashes and they generate less air and noise pollution.

But there are also bigger vehicles traveling mainly in Australian highways and industrial streets. These vehicles that exceed 25 m of length operate under the Performance Based Standards (PBS) Scheme, that provides heavy vehicle industry additional opportunities to innovate. This results in improved productivity for a given freight task, safer performance and the least possible effects on roads and bridges. The scheme focuses on how well the vehicle behaves on the road, rather than how big and heavy (length and mass) it is, through a set of safety and infrastructure protection standards. 

The main types of PBS vehicles are super B-doubles that are up to 30 m long and with a total mass of up to 108 t
Port of Brisbane
... and the A-double, a very basic multiple combination with two semitrailers linked by a converter dolly between the two trailers. A-doubles are up to 30 m long. 

Port of Brisbane
The following image shows the difference between these two types of train configuration.

For many years I wan an advocate of rail freight transport.and I still believe that for trunk routes it is more environmental friendly and sustainable. But road freight transport is a more flexible alternative that can present an innovative solution especially in the last mile problem. If the drivers are properly trained and educated the perception of general public towards these vehicles might change.