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Dirt roads almost always form a washboard-like surface with ridges. The reason for this is that dirt roads have tiny irregularities; a wheel hitting a bump pushes it forward, making it bigger, while a wheel pushing over a bump pushes dirt into the next bump. However, the surface can remain flat for
436:
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305:
where they pass, and may be sandy, stony, rocky or have a bare earth surface, which could be extremely muddy and slippery when wet, and baked hard when dry. They are likely to become impassable after rain. They are common in
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341:, especially in wet weather, or on rocky or very sandy sections. It is as easy to become bogged in sand as it is in mud; a high clearance under the vehicle may be required for rocky sections.
255:
regularly to produce an enhanced camber to encourage rainwater to drain off the road, and drainage ditches at the sides may be absent. They are unlikely to have
162:
not paved with asphalt, concrete, brick, or stone; made from the native material of the land surface through which it passes, known to highway engineers as
661:
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420:
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Driving on dirt roads requires great attention to variations in the surface and it is easier to lose control than on a gravel road.
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259:
through low-lying areas. This leads to greater waterlogging and erosion, and after heavy rain the road may be impassable even to
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509:
Minicars, Maglevs, and Mopeds: Modern Modes of
Transportation Around the World: Modern Modes of Transportation around the World
1984:
1099:
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1951:
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1946:
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2005:
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would normally be similar but less suitable for larger vehicles—the distinction is not well-defined.
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1879:
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of many developing countries, where they may also be used as major highways and have considerable width.
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82:
1999:
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of many countries, often very narrow and infrequently used, and are also found in
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Unpaved roads with a harder surface made by the addition of material such as
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While most gravel roads are all-weather roads and can be used by ordinary
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211:, depending on material used, may be dirt roads or improved roads.
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Dual carriageway / Divided highway / Expressway
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121:"Fieldway" redirects here. For the area of Croydon, England, see
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581:
1439:
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Dirt roads take on different characteristics according to the
18:
534:"Road Bumps: Why dirt roads develop a washboard surface"
251:
Compared to a gravel road, a dirt road is not usually
235:
by highway engineers. Improved unpaved roads include
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49:. Unsourced material may be challenged and removed.
191:, or the "Class Four Highway" designation used in
16:Unpaved road made from the land's native material
227:(stones), might be referred to as dirt roads in
263:. For this reason, in some countries, such as
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8:
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506:Sultana, Selima; Weber, Joe (2016-04-18).
109:Learn how and when to remove this message
498:
351:
1696:Median / Central reservation
330:, dirt roads may only be passable by
7:
47:adding citations to reliable sources
1614:Risk compensation (road transport)
14:
450:Spraying dirt road with water in
1980:Glossary of road transport terms
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458:
434:
419:
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369:
354:
23:
125:. For the light rail stop, see
34:needs additional citations for
1:
1962:Pavement performance modeling
1952:International roughness index
402:Mountain track in Switzerland
385:
1957:Present serviceability index
1751:Sidewalk / Pavement
1296:Diamond grinding of pavement
318:velocities less than 5 mph.
1929:Underpass / Tunnel
1924:Overpass / Flyover
1678:High-occupancy vehicle lane
1568:Driving under the influence
642:Freeway / Motorway
426:Cycling on a rough road in
414:Detail of a dry, loamy road
2022:
856:Highway systems by country
120:
1975:
1967:Granular base equivalency
1786:Traffic signal preemption
1194:Right-in/right-out (RIRO)
1100:Single-point urban (SPUI)
378:Lincoln Park neighborhood
231:but are distinguished as
209:Laterite and murram roads
1947:Pavement condition index
1673:High-occupancy toll lane
1668:Contraflow lane reversal
1643:Barrier transfer machine
801:Express-collector setup
1985:Road types by features
1880:Raised pavement marker
1847:Constant-slope barrier
1771:Traffic directionality
1761:Street running railway
1184:Protected intersection
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144:
1842:Concrete step barrier
1179:Offset T-intersection
465:Rural dirt road near
376:Wrightwood Street in
322:Driving on dirt roads
285:
135:
1885:Road surface marking
1583:Single-vehicle crash
1306:Full depth recycling
1204:Seagull intersection
275:, they are known as
43:improve this article
1711:Pedestrian crossing
1274:Reinforced concrete
1110:Three-level diamond
821:Two-lane expressway
806:Farm-to-market road
363:Fremont, California
1741:Runaway truck ramp
1563:Driver's education
1351:Rubberized asphalt
1286:Crocodile cracking
1209:Split intersection
977:Hierarchy of roads
938:Single carriageway
312:metropolitan areas
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145:
139:on a dirt road in
127:Fieldway tram stop
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1992:
1801:Wide outside lane
1627:
1626:
1604:Automotive safety
1485:Road slipperiness
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1080:Diverging diamond
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1026:
943:Single-track road
885:Bicycle boulevard
568:Green lane (road)
519:978-1-4408-3495-0
445:
277:dry-weather roads
261:off-road vehicles
241:macadamized roads
179:Terms similar to
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111:
93:
2013:
1837:Cat's eye (road)
1658:Complete streets
1430:Dead Man's Curve
1393:
1331:Pavement milling
1246:Asphalt concrete
1189:Quadrant roadway
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1004:Street hierarchy
652:Elevated highway
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336:four-wheel drive
185:dry-weather road
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1895:Traffic barrier
1855:F-Shape barrier
1810:
1766:Traffic calming
1726:Reversible lane
1716:Pedestrian zone
1701:Motorcycle lane
1663:Contraflow lane
1635:time allocation
1634:
1623:
1619:Underride guard
1587:
1549:
1435:Expansion joint
1397:
1387:
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1366:Stamped asphalt
1228:
1159:Continuous flow
1132:
1128:
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1049:grade-separated
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982:Private highway
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286:A dirt road in
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247:Characteristics
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123:Fieldway (ward)
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12:
11:
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2019:
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2006:Types of roads
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1865:Jersey barrier
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1796:Unused highway
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1776:Traffic island
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1573:Drowsy driving
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1455:Level crossing
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1186:
1181:
1176:
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1154:Channelization
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1139:3-way junction
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1133:
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1120:
1118:
1117:
1112:
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1097:
1092:
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1033:Road junctions
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997:business route
994:
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925:Primitive road
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796:County highway
793:
791:Collector road
788:
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773:
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765:United Kingdom
762:
757:
752:
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712:
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700:Czech Republic
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677:
672:
666:
664:
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633:
631:
629:Limited-access
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375:
368:
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323:
320:
248:
245:
233:improved roads
216:
213:
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117:
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31:
29:
22:
15:
13:
10:
9:
6:
4:
3:
2:
2018:
2007:
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2003:
2001:
1986:
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1901:
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1875:Noise barrier
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1832:Cable barrier
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1807:
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1781:Traffic lanes
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1721:Refuge island
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1712:
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1686:Living street
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1679:
1676:
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1656:
1654:
1653:Climbing lane
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1555:Human factors
1552:
1546:
1543:
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1533:
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1528:
1526:
1523:
1521:
1520:Traffic light
1518:
1516:
1513:
1511:
1508:
1506:
1503:
1501:
1498:
1496:
1493:
1491:
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1483:
1481:
1478:
1476:
1473:
1471:
1470:Oversize load
1468:
1466:
1463:
1461:
1460:Manhole cover
1458:
1456:
1453:
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1426:
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1413:
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1324:
1322:
1319:
1317:
1314:
1312:
1309:
1307:
1304:
1302:
1299:
1297:
1294:
1292:
1291:Crushed stone
1289:
1287:
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1202:
1200:
1197:
1195:
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1190:
1187:
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1177:
1175:
1174:Michigan left
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1162:
1160:
1157:
1155:
1152:
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1147:
1145:
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1126:Intersections
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1116:
1113:
1111:
1108:
1106:
1103:
1101:
1098:
1096:
1093:
1091:
1088:
1086:
1083:
1081:
1078:
1076:
1075:Directional T
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1071:
1068:
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1058:
1057:
1055:
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1034:
1030:
1020:
1017:
1015:
1012:
1010:
1007:
1005:
1002:
998:
995:
993:
992:special route
990:
989:
988:
985:
983:
980:
978:
975:
973:
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964:
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931:
928:
926:
923:
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918:
916:
913:
911:
910:Frontage road
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906:
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32:This article
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1900:Traffic cone
1890:Rumble strip
1791:Truck bypass
1746:Shared space
1706:Passing lane
1691:Managed lane
1648:Bicycle lane
1530:Washboarding
1525:Traffic sign
1450:Hairpin turn
1300:
1219:Texas U-turn
1149:Box junction
1043:Interchanges
987:Route number
895:Country lane
637:Bike freeway
563:Country lane
558:Byway (road)
538:. Retrieved
536:. 2007-08-15
528:
512:. ABC-CLIO.
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384:, Illinois,
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237:gravel roads
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41:Please help
36:verification
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1938:Performance
1870:Kassel kerb
1827:Botts' dots
1815:Demarcation
1515:Storm drain
1480:Road debris
1405:Aquaplaning
1398:environment
1386:Road safety
1264:Cobblestone
1214:Superstreet
1019:Winter road
967:Concurrency
960:Other terms
951:Sunken lane
920:Main street
865:Local roads
389: 1880
308:rural areas
269:New Zealand
257:embankments
205:earth track
170:Terminology
166:material.
58:"Dirt road"
1940:indicators
1909:Structures
1860:Guard rail
1736:Road verge
1609:Seat belts
1545:Snowsquall
1510:Speed bump
1490:Road train
1311:Glassphalt
1251:Bioasphalt
1224:Turnaround
1199:Roundabout
1129:(at-grade)
1095:Roundabout
1060:Cloverleaf
915:Green lane
851:Trunk road
779:Main roads
662:By country
540:2022-12-06
493:References
201:dirt track
189:earth road
69:newspapers
1731:Road diet
1633:Space and
1578:Road rage
1465:Oil spill
1425:Crosswind
1415:Black ice
1410:Avalanche
1336:Permeable
1169:Jughandle
1164:Hook turn
1070:Free-flow
1014:Toll road
933:Side road
890:Boulevard
846:Super two
841:Ring road
816:Link road
715:Hong Kong
670:Australia
612:hierarchy
288:Kärsämäki
265:Australia
225:aggregate
181:dirt road
149:dirt road
2000:Category
1919:Causeway
1756:Shoulder
1592:Vehicles
1540:Whiteout
1500:Rockfall
1495:Roadkill
1420:Bleeding
1396:Road and
1356:Sealcoat
1281:Corduroy
1269:Concrete
1259:Chipseal
1238:Surfaces
1090:Raindrop
905:Driveway
900:Dead end
880:Backroad
831:2+2 road
826:2+1 road
750:Portugal
740:Pakistan
552:See also
471:Michigan
467:Kingsley
428:Tanzania
339:vehicles
164:subgrade
141:Paraguay
1822:Bollard
1806:Woonerf
1535:Washout
1475:Pothole
1388:factors
1376:Texture
1346:Plastic
1326:Macadam
1115:Trumpet
1065:Diamond
836:Parkway
811:Highway
725:Ireland
705:Germany
695:Croatia
675:Belgium
382:Chicago
303:geology
292:Finland
273:Finland
157:unpaved
83:scholar
1915:Bridge
1599:Airbag
1371:Tarmac
1316:Gravel
1144:Bowtie
1085:Parclo
1009:Stroad
972:Detour
947:Street
875:Avenue
760:Taiwan
745:Poland
710:Greece
685:Canada
680:Brazil
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486:Brazil
332:trucks
253:graded
221:gravel
137:Cattle
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1341:Plank
1255:Brick
1105:Stack
871:Alley
755:Spain
735:Nepal
730:Italy
720:India
690:China
573:Trail
452:Benin
299:soils
203:, or
197:track
193:China
153:track
90:JSTOR
76:books
1851:Curb
1682:Lane
1445:Ford
1361:Sett
1301:Dirt
929:Road
609:Road
514:ISBN
328:cars
301:and
271:and
267:and
239:and
223:and
195:. A
183:are
160:road
62:news
1505:Rut
1440:Fog
1321:Ice
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