My limited experience in a limited number of provincial areas: Local PNP Sargent told me that they don't enforce speed. The city's speed limit (built up area) is 20 km/h everywhere (as set by the city council); this is generally ignored.
Without speed tagging, auto-routing on a GPS is useless, it simply takes the shortest route over the slowest roads. Out of the city proper, the classification of the road is not a great indicator of the comfortable speed of the road - some significant routes can be in poor condition (sealed or un-sealed). The "legal" speed is often greater than the comfortably achievable speed. Strict tagging of road speeds based on their classification will lead to some poor auto-routing, where the GPS takes a bad road. I've been a bit naughty and have been guilty of tagging roads in a way that forces the GPS to take to best route, regardless of classification (i.e. tag to quality). I know this is not an appropriate tagging recipe .... just putting it out there that some wriggle room is needed if auto-routing in rural areas is to be considered. Maybe an informal thing? On Mon, Dec 2, 2019 at 4:33 PM Jherome Miguel <jheromemig...@gmail.com> wrote: > While there haven't been a decision on revising the existing > classifications > for roads, I am also considering discussing a tagging scheme for implied > speed limits (those not indicated by a sign). I have been experimenting > with tagging of those unsigned speed limits on some of my last edits, but > I'm also thinking of a standard for the country. > > ---- > > The default speed limits for the Philippines (as codified in the Land > Transportation and Traffic Code or Republic Act 4136) are as follows > > 80 kph (50 for heavy trucks and buses) - "open country" roads > 40 kph (30 for trucks and buses) - "through" roads within built-up area > 30 kph - "non-through" roads within built-up areas > 20 kph - crowded streets > > In addition, many major rural roads may have lower implied limits (e.g. 40 > kph) due to factors such as pedestrians walking on the road, and some major > urban roads may have a higher limit (e.g. 60 for multi-lane roads or other > roads where pedestrians don't frequently cross or walk alongside vehicles). > > Expressways are not covered by RA 4136, but there seems to be these > defaults (almost all of these explicitly marked by standard circular signs): > > 100 (80 for heavy trucks and buses) - rural > 80 - urban > 60 - minimum > > ---- > > These defaults, in turn, corresponds to these possible values for OSM > (along with the corresponding numeric value: > > - PH:rural - 80 > - PH:urban - 30 (minor through roads within cities/municipalities, > generally those classified tertiary), 40 (all other major roads), 60 > (higher-quality roads, generally multi-lane) > -PH:living_street - 20 (note: includes anything classified unclassified, > residential and service, not only those classified living_street) > > Important questions are: > > 1.) How should we handle the RA 4136 categories: source:maxspeed= or > maxspeed:type=? > 2.) Is this already a fine proposal, or this may need some tweaking? > > --TagaSanPedroAko > _______________________________________________ > talk-ph mailing list > talk-ph@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-ph >
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