Road Extended JOSM (default) style, info - legend.

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This extended Road_Extended_JOSM_style.zip style.

http://mijndev.openstreetmap.nl/~allroads/JOSM/Styles/Road_Extended_JOSM_style.zip

Copy, paste this style in the preference of the JOSM Map Paints Styles
There is no need to unzip it.
Inside is the mapcss and all the needed icons.
Latest version: 0.1.3 30-09-2017

Main goals:

Highway coloring set for use over aerial and hillshade maplayers.
On highway visualize access of all land-based transportation modes and more.
Barrier-nodes set image on different zoomlevels.
On barrier visualize access of all land-based transportation modes and more.
Coloring highway-nodes to visiualize, tagging and connection difference.
Set surface visibility on highway.
Set smoothness visibility on highway.
Indicate there is a route on the way.
Inactivate way visiualisation that is not needed anymore.(elementstyle)

Extended the JOSM (default elementstyle) and set some parts inactive or modified.
Therefor:

Uncheck JOSM Default style!

Use minimal JOSM-version: 12542

Filter setting JOSM

For highway editing:

(type:way new) OR (type:way highway=*) OR (type:node new) OR (type:node traffic_sign=*)OR (type:relation type=restriction) OR (type:way man_made=bridge) OR (type:way barrier=*) OR (type:node barrier=*)

We could set waterway=*, natural=water, railway=*, route=ferry to it, because highways cross them and have a common node, example, ford.

Road Editing - Land-based transportation and more - Legend -

Landbased Transportation icons and more

Key	Description	Explanation
access=*	General access	Key to describe a general access restriction that applies to all transport modes.
vehicle=*	Vehicle	Any vehicle. NL:RVV voertuigen: fietsen, bromfietsen, gehandicaptenvoertuigen, motorvoertuigen, trams en wagens.
foot=*	Foot	Pedestrians NL:RVV Voetgangers.
bicycle=*	Bicycle	Cyclists NL: "de fiets" fietsen, het vervoermiddel.
mofa=*	Mofa	"Low performance moped", usually with a maximum design speed of 25 km/h. NL:RVV snorfiets: 1. bromfiets die blijkens de gegevens in het kentekenregister is geconstrueerd voor een maximumsnelheid die niet meer bedraagt dan 25 km per uur, met uitzondering van de speed-pedelec, of 2. bromfiets als bedoeld in artikel 1, eerste lid, onderdeel e, subonderdeel d, van de wet
moped=*	Moped	Motorized bicycles with a speed restriction; e.g., at most a 50 cc engine or max. speed of about 45 km/h. NL:WvW bromfiets: artikel 1, eerste lid, onderdeel e, onder a, b en c, van de wet;
horse=*	Horse	The horse (animal) or/and the combination with a rider.
dog=*	Dog	Dog.
dog=leashed	Dog leashed	Access_sign explains that the dogs must be leashed.
dog=unleashed	Dog unleashed	Access_sign explains that the dogs can walk free.
dog=under_control	Dog under control	Access_sign explains that the dogs must be under control, if not, dog is not allowed unleashed.
carriage=*	Carriage	Horse(s) and carriage.
motor_vehicle=*	Motor_vehicle	Any motorized vehicle, common mistake, this is also moped and mofa!
motorcycle=*	Motorcycle	A 2-wheeled motor vehicle, allowed to drive on motorways. NL:RVV motorfiets: motorvoertuig op twee wielen al dan niet met zijspan- of aanhangwagen.
motorcar=*	Motorcar	Automobiles/cars NL:RVV personenauto: personenauto als bedoeld in artikel 1.1 van de Regeling voertuigen.
hgv=*	Hgv	heavy goods vehicle; e.g., goods vehicles with a maximum allowed mass over 3.5 tonnes. NL:RVV vrachtauto: motorvoertuig, niet ingericht voor het vervoer van personen, waarvan de toegestane maximum massa meer bedraagt dan 3500 kg.
agricultural=*	Agricultural	Agricultural motor vehicles; e.g., tractors) that have additional restrictions; e.g., a 25 km/h speed limit.
bus=*	Bus	A heavy bus acting as a public service vehicle. NL:RVV autobus: motorvoertuig, ingericht voor het vervoer van meer dan acht personen, de bestuurder daaronder niet begrepen.
psv=*	Psv	Public service vehicle.
atv=*	Atv	Atv a.k.a. Quad (bike) (Restricted to or permissive for vehicles 50 in, 1.27 m, or less in width) still in proposal stage.
snowmobile=*	Snowmobile	All kind of snowmobiles.
double_tracked_motor_vehicle=*	Motor_vehicle double tracked	Motor vehicles with more than 2 wheels/more than 1 track. NL:RVV motorvoertuigen op meer dan twee wielen. NL:RVV motorvoertuigen: alle gemotoriseerde voertuigen behalve bromfietsen, fietsen met trapondersteuning en gehandicaptenvoertuigen, bestemd om anders dan langs rails te worden voortbewogen.
motorhome=*	Motorhome	A motorhome (or motor coach) is a type of self-propelled recreational vehicle or RV which offers living accommodation combined with a vehicle engine. NL: kampeerauto, camper.
trailer=*	Trailer	Needs to be towed by another vehicle which has its own restrictions. NL:RVV aanhangwagens: voertuigen die door een voertuig worden voortbewogen of kennelijk bestemd zijn om aldus te worden voortbewogen, alsmede opleggers.
wheelchair=*	Wheelchair	The use of a wheelchair. NL: Rolstoel.
disabled=*	Disabled	Holders of blue badge, UK, or other such disabled persons permit. (under construction) NL: Gehandicaptenkaart.
microcar=*	Microcar	Closed coach double tracked special moped. NL:RVV brommobiel: bromfiets op meer dan twee wielen, die is voorzien van een carrosserie.
disabled_vehicle=*	Disabled_vehicle	Disabled vehicle, with or without a motor. NL:RVV gehandicaptenvoertuig: voertuig dat is ingericht voor het vervoer van een gehandicapte, niet breder is dan 1,10 meter en niet is uitgerust met een motor, dan wel is uitgerust met een motor waarvan de door de constructie bepaalde maximumsnelheid niet meer dan 45 km per uur bedraagt. en geen bromfiets is. NL: Kan ook gebruikt worden door een niet invalide.
disabled_motor_vehicle=*	Disabled motorvehicle	Motorized disabled vehicle, which is not a moped. NL:RVV gehandicaptenvoertuig: voertuig dat is ingericht voor het vervoer van een gehandicapte, niet breder is dan 1,10 meter en is uitgerust met een motor waarvan de door de constructie bepaalde maximumsnelheid niet meer dan 45 km per uur bedraagt. en geen bromfiets is. NL: Kan ook gebruikt worden door een niet invalide.

For more information Access wiki page

The color indentification for mofa and moped is the color of the Netherlands license plate.

Mofa	Snorfiets	Blue
Moped	Bromfiets	Yellow

Dog have extra icons to express the behaviour.
Dog key and value are under proposal.

Disabled vehicle icons because goverment law makes a category for it. Traffic_signs description mention these category.

Icons access color code

Value	Color	Hex color	Description
yes	Lime	#00ff00	The public has an official, legally-enshrined right of access; i.e., it's a right of way.
no	Red	#ff0000	No access for the general public.
private	Maroon	#800000	Only with permission of the owner on an individual basis.
permissive	Orange	#ff6600	Open to general traffic until such time as the owner revokes the permission which they are legally allowed to do at any time in the future.
designated	Blue	#0000ff	A preferred or designated route for the class of traffic specified by the tag key.
destination	Yellow	#ffff00	Only when travelling to this element/area.
delivery	Purple	#800080	Only when delivering to the element.
consumers	Fuchsia	#ff00ff	Only for customers of the element.
use_sidepath	Aqua	#00ffff	Can only be used in countries with compulsory cycleways and gives access information on parallel roads.
dismount	Green	#008000	Permitted for some vehicle (or animal) only if you dismount.
agricultural	Brown	#a05a2c	Only for agricultural traffic.
forestry	Teal	#008080	Only for forestry traffic.
discouraged	Grey50	#808080	A legal right of way exists (see yes) but usage is officially discouraged.
official	Olive	#808000	The value official for the access tags foot, bicycle and horse indicates a way legally dedicated to specific modes of travel by a law or by the rules of traffic.
limited	access colors	access colors	Wheelchairs have partial access (e.g some areas can be accessed and others not, areas requiring assistance by someone pushing up a steep gradient).

Directions Icons

Key	Color	Description	Explanation
value set in	white	Mode	This icon have no value.
:forward=	access colors	Forward	Forward describe a direction along a way, forward means the direction in which the way is drawn in OpenStreetMap.
:backward=	access colors	Backward	Backward describe a direction along a way, backward means the opposite direction in which the way is drawn in OpenStreetMap.
oneway:=	access colors	Both directions	Both direction along a way, the drawn and the opposite direction in which the way is drawn in OpenStreetMap.
oneway:*=no	red (no) / lime (yes)	Oneway:(mode)=*	Oneway can be used in conjunction with vehicle type in order to tag exceptions, i.e. oneway:moped=no for a one-way streets, where mopeds are allowed to drive in the opposite direction.

Conditional Openinghours Icons

Mostly placed under the node or way

Key/Value	Color	Description	Explanation
value set in	white	Mode	This icon have no value.
@	black/grey	With @	@ is used in the value
:conditional=	access colors	Conditional	Conditional is used in the key.
:conditional=	black/grey	Conditional	Conditional is used in the key.
sunrise-sunset	access colors	Daytime	Colored in from sunrise till sunset.
sunset-sunrise	access colors	Nighttime	Colored in from sunset till sunrise.
opening_hours=*	no colors	Opening hours	Opening hours is set on way or node.

Explanation

Mostly all *:conditional=* and *:conditional:forward/backward=* and in value @ is placed beneath the way line and node on a mode icon. It depends on the drawn direction of the OSMway.
Not all combinations are good, logic, you have to decide, what is good or wrong.
Later it is possible to give a wrong combination, a deprecated icon.

@ is set, as a indication icon, control if the (*) is right. ( @ very small, it is a hint.)

Highway Indentification

String	Color	Casing color	Description	Explanation
*=motorroad	#3377ff		Motorroad
*=motorway	#809bc0		Motorway	Also for *=motorway_link
*=trunk	#7fc97f		Trunk	Also for *=trunk_link
*=primary	#fb805f		Trunk	Also for *=primary_link
*=secondary	#ff9900		Secondary	Also for *=secondary_link
*=tertiary	#669900		Tertiary	Also for *=tertiary_link
*=unclassified	#00ffff		Unclassified
*=residential	#ffff00		Residential
*=living_street	#999999	#ffffff	living_street
*=service	#008080		Service
*=escape	#c0c0c0		Escape
*=road	#770000	#ff9696	Road	Please, give the road a indentification.
*=construction	#770000	#ffff00	Construction	Map and tag when construction start.
*=track	#ff66cc		Track	tracktype=*
*=cycleway	#b100ff		Cycleway
*=footway	#00ff00		Footway
footway=sidewalk	#808080		Sidewalk	Footway, what is a sidewalk. NL: Trottoir
*=pedestrian	#999999	#00ff00	Pedestrian
*=path	#00ff00		Path
*=bridleway	#a18559	#ffffff	Bridleway
*=steps	#ff0000		Steps
*=bus_guideway	#404040	#008080	Bus guideway
*=busway	#404040	#ff0000	Busway
*=raceway	#ff80ff	#ffffff	Raceway

Highway Tracktype Control (under construction)

String	Color	Shape	Description	Explanation
tracktype=grade1	#ff66cc	Number	Grade 1	On highway=track, grade1 number to support the dashed line, on other ways, it could be a wrong tag.
tracktype=grade2	#ff66cc	Number	Grade 2	On highway=track, grade2 number to support the dashed line, on other ways, it could be a wrong tag.
tracktype=grade3	#ff66cc	Number	Grade 3	On highway=track, grade3 number to support the dashed line, on other ways, it could be a wrong tag.
tracktype=grade4	#ff66cc	Number	Grade 4	On highway=track, grade4 number to support the dashed line, on other ways, it could be a wrong tag.
tracktype=grade5	#ff66cc	Number	Grade 5	On highway=track, grade5 number to support the dashed line, on other ways, it could be a wrong tag.

Highway Surface (under construction)

String	Color	Casing color	Description	Explanation
*=asphalt	#000000	#ffffff	Asphalt
*=concrete	#ffffff	#ffffff	Concrete	One lane, also small for single_tracked vehicle.
*=concrete:lanes	#ffffff	#ffffff	Concrete lanes	Long, narrow concrete plates laid out for a double_tracked vehicle.
*=concrete:plates	#ffffff	#ffffff	Concrete plates	Heavy duty plates chained closely together on the short side. Might have tar or sand in between the connections.
*=paving_stones	#b35900	#ffffff	Paving stones

Highway Smoothness

String	Color	Shape	Description	Explanation
*=excellent	#000000	3 rounds	Excellent	(thin_rollers) roller blade, skate board and all below.
*=good	#000000	2 rounds	Good	(thin_wheels) racing bike and all below.
*=intermediate	#000000	1 round	Intermediate	(wheels) city bike, sport cars, wheel chair, Scooter and all below.
*=bad	#ff6600	1 triangle	Bad	(robust_wheels) trekking bike, normal cars, Rickshaw and all below.
*=very_bad	#ff6600	2 triangles	Very bad	(high_clearance) Car with high clearance, light-duty off road vehicles(off_road_wheels) heavy-duty off road vehicles and all below.
*=horrible	#ff6600	3 triangles	Horrible	(off_road_wheels) heavy-duty off road vehicles and all below
*=very_horrible	#ff6600	4 triangles	Very horrible	(specialized_off_road_wheels) tractor, ATV, tanks, trial, Mountain bike and all kind of off-highway vehicles.
*=impassable	#ff0000	1 square	Impassable	No wheeled vehicle.

Highway Tags

String	Value	Color	Description	Explanation
maxspeed=*	(number)	#ffff00	Maxspeed	Maxspeed is set on the highway.
segregated=yes	yes	#00ff00	Segregated	Used to show that there is some form of segregation between pedestrians and cyclists on a cycle path or footway. NL: Gescheiden wandel en fietsstrook
segregated=no	no	#ff0000	Segregated	Used to show that a highway=cycleway or highway=footway is shared between cyclists and pedestrians with no line or other separation.

Highway Route Relation Tags

Item	String	Shape	Color	Description	Explanation
	type=route	Dot	#ffff00	All routes	All route relations for foot, bicycle, horse, etc.

Highway-nodes visibility

String	Color	Description	Explanation
way > node	#0000ff	Highlight	Highlighted the node of a highway.
way > node:connection	#ff00ff	Connection	Highwaysegment is connected to all kinds of waysegments. This also could be a highway connected to landuse, what is wrong.
way > node:tagged	#ffa500	Tagged	On the highwaynode is a key/value tagged. Not visible then you see a other icon.
way > node:selected	#ff0000	Selected	The highwaynode is selected, you can change the key/value or move the node.

Thanks, naoliv, for the "Highway Nodes" style example.
https://josm.openstreetmap.de/wiki/Styles/Highway_Nodes Modified

Direction for traffic signs/signals

Visual	Color	Description	Explanation
Sign and signals		Traffic signs/signals	Direction can be set on signs and signals.
Arrow	Black	Direction	The arrow shows the drawn way direction of the OSM way. But NOT when the tag is set on a connection node. Make a new node on the way! Otherwise forward/backward have no meaning.
>?	White/black	No direction	There is not a direction key tagged. Please, tag the direction!
↓↑	White/black	Directions	The direction key is tagged. Any value is possible.
↑	White/black	Forward	The sign/signal is effective in the forward direction, the OSM drawn way direction.
↓	White/black	Backward	The sign/signal is effective in the backward direction, the opposite direction as the drawn OSM way.

Thanks, Michael Maier (species@osm) for the "Direction for traffic signs" style example.
https://github.com/species/josm-preset-traffic_sign_direction Modified

Barrier Icons - Legend - (on node)

Key/Value	Description	Explanation
barrier=bollard	Bollard	One ore more solid (usually concrete or metal) pillar(s) in the middle of the road to prevent passage by some traffic.
barrier=cycle_barrier	Cyclebarrier	A barriers along a path that slows or prevents access for bicycle users.
barrier=kissing_gate	Kissinggate	A type of gate where you have to go into an enclosure and open a gate to get through.
barrier=cattle_grid	Cattlegrid	A hole in the road surface covered in a series of bars that allow wheeled vehicles but not animals to cross.
barrier=turnstile	Turnstile	A passage on foot through a fence.
barrier=full-height_turnstile	Full-height turnstile	A full-height turnstile.
barrier=entrance	Entrance	An opening or gap in a barrier.
barrier=block	Block	One or more large immobile block(s) barring free access along a way.
barrier=stile	Stile	A structure which provides people a passage through or over a boundary via steps, ladders or narrow gaps.
barrier=horse_stile	Horsestile	A horse stile allows pedestrians and horses to cross a gap through a fence.
barrier=sump_buster	Sumpbuster	A barrier to stop cars (two tracked vehicles with less than a certain ground clearance and width between tracks).
barrier=bus_trap	Bus trap	A short section of the roadway where there is a deep dip in the middle to prevent passage by some traffic.
barrier=gate	Gate	A section in a wall or fence which can be opened to allow access.
barrier=hampshire_gate	Hampshiregate	A section in a wall or fence which can be opened to allow access.
barrier=bump_gate	Bumpgate	A drive-through gate used in rural areas to provide a barrier to livestock that does not require the driver to exit the vehicle.
barrier=lift_gate	Liftgate	A bar or pole pivoted in such a way as to allow the boom to block vehicular access through a controlled point.
barrier=toll_booth	Toll booth	A place where a road usage toll or fee is collected.
barrier=border_control	Border control	A control point at an international border between two countries.
barrier=swing_gate	Swinggate	A gate consisting of a bar or pole pivoted in such a way as to allow the boom to block vehicular access through a controlled point.
barrier=chain	Chain	A chain used to prevent motorised vehicles.
barrier=rope	Rope	A flexible barrier made of rope.
barrier=height_restrictor	Height restrictor	A height resctrictor which prevents access of vehicles higher than a set limit. If height is tagged, it is shown with a red number, example 2.2 is in meters.
barrier=motorcycle_barrier	Motorcycle barrier	A barrier along a path preventing access by motorcycles.
barrier=debris	Debris	Debris blocking a road.
barrier=log	Log	A log blocking a road.
barrier=jersey_barrier	Jersey barrier	A barrier made of heavy prefabricated blocks.
barrier=spikes	Spikes	Spikes to prevent drive through.
barrier=sally_port	Sallyport	A secure, controlled entryway to a fortification or prison.
barrier=yes	Yes	Please, replace "yes" by a specific value.
barrier=*	(Else)	Else, barrier tagged but excluded those listed above and kerb. Values can be wrong, a fence, what is wrong on a node and all other not often used values and new values.

Thanks, JOSM community for there support.

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