jonesy
Guru
Nipper said:...
Jonesy sorry got my % who never cycle and less than 5 miles figures mixed up. You have to admit that is still a massive number of twunts clogging up the roads. ...
Well these little details matter a great deal, as understanding what sort of trips people make and how long they are is fundamental if we are going to implement the right measures to get them to change their travel behaviour. If we look at the National Travel Survey:
http://www.dft.gov.uk/pgr/statistics/datatablespublications/personal/mainresults/nts2008/
Table 3.5 tells us that about 55% of car journeys are under 5 miles, 22% are under 2 miles. So yes, there's a lot of potential for modal shift (though bear in mind that this refers to the proportion of trips, not total mileage,which is skewed towards the longer trips). However, if you look at the figures for cycling, 86% of trips are under 5 miles, 49% under 2 miles, 19% under 1 mile. Clearly there's a long tail of people who cycle longer distances, but for most people, most cycle trips are short, especially utility trips, and this is as true of countries where there is a high level of cycle use as it is in the UK. Now this really ought to tell us a lot about the sort of trips we should be focusing on, i.e. short ones, so why on Earth has so much effort gone into creating routes that only serve much longer distances, either because they are remote from settlements or are simply indirect?
See also table 3.7 which reports average trip times- they are pretty well identical for cars and cycling at just over 20 minutes. I rather doubt this is a coincidence- people are cycling for those journeys that are time competitive with driving. The key to getting people to cycle instead of driving is therefore to make it advantageous in terms of time. You get that in places like Oxford, Cambridge and increasingly London where congestion and difficulty parking make cycling time competitive for commuting journeys. So if you want to encourage more people to cycle then you have to make sure you are improving the time competitiveness over driving, i.e focus on the direct routes and only do things that make it easier to make progress. You don't get that from routes and infrastructure that are indirect, discontinuous or simply slow because they are shared with large numbers of pedestrians, but that is what you'll get if you demand segregation above all else.
Edit- this also affects the Oxford vs Milton Keynes comparison we were discussing earlier. Oxford is much more compact, so journey lengths are much shorter and cycling hence time competitive with driving for a greater proportion of journeys. No matter how good you make the off -road network in Milton Keynes, cycling will not compete with driving for a large perctenage of trips when journeys are longer and driving so convenient.