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Shaft drive (bicycle)
A shaft drive on a bicycle is a chainless drivetrain using bevel gears and a rotating shaft to turn the rear wheel, first patented in 1890.
Shaft drive (motorcycle)
Shaft drive, also called cardan drive, is a motorcycle final drive that carries engine power to the rear wheel through an enclosed shaft instead of a chain.
Shared lane marking
A shared lane marking, commonly called a sharrow, is a pavement marking of a bicycle symbol with two chevrons, placed in travel lanes shared by bicyclists and motor vehicles.
Shared space
Shared space is a street design approach that minimizes separation between vehicles and pedestrians by removing kerbs, signs, and markings, originating in the Netherlands in the late 1960s.
Shelby American
Shelby American is an American performance-car company founded by racing driver Carroll Shelby in 1962 in Los Angeles, best known for the Shelby Cobra and the GT350 and GT500 Mustangs.
Shelby Daytona
The Shelby Daytona, also called the Shelby Cobra Daytona Coupe, is a closed-cockpit racing car built by Shelby American in 1964 and 1965 to beat Ferrari's 250 GTO.
Shelby Mustang
The Shelby Mustang is a high-performance version of the Ford Mustang built by Shelby American, starting with the 1965 GT350 and later the big-block GT500 of 1967.
Shibuya Crossing (渋谷スクランブル交差点)
Shibuya Crossing (渋谷スクランブル交差点), also known as Shibuya Scramble Crossing, is a pedestrian scramble intersection outside Shibuya Station's Hachiko exit in Tokyo, established in 1973 and among the world's busiest.
Shin-Tomei Expressway
The Shin-Tomei Expressway (新東名高速道路) is a tolled expressway in Japan running parallel to the Tomei Expressway between Tokyo and Nagoya, opened in 2012 with a 120 km/h limit on its completed six-lane sections.
Shock absorber
A shock absorber, also called a damper, is a hydraulic or electromechanical suspension device that controls how quickly springs and wheels settle after a road impact.
Shooting brake
A shooting brake is a car body style combining a coupé's proportions with an estate car's extended roof and rear load area, traditionally with two doors.
Short Line (bus company)
Short Line is a Coach USA brand providing commuter and intercity bus service in lower New York State, linking northern New Jersey and the Hudson Valley with Manhattan.
Shoulder (road)
A shoulder, also called the hard shoulder or breakdown lane, is the strip beside a road's carriageway that supports the pavement and provides space for emergency stops, drainage, and pedestrians or bicyclists.
Shuto Expressway
The Shuto Expressway (首都高速道路), also called the Metropolitan Expressway, is a toll expressway network serving Tokyo and surrounding prefectures, first opened in 1962 and expanded for the 1964 Tokyo Olympics.
Sideshows (car culture)
A sideshow, also called a street takeover, is an unsanctioned gathering begun in 1980s Oakland, California, where drivers block intersections and perform stunts like donuts and burnouts.
Siemens TCS (traffic control system)
Siemens TCS is a traffic control system family from Siemens Mobility and Yunex Traffic whose UTC platforms run the SCOOT adaptive signal algorithm, used across some 5,500 London junctions.
Signal phase and timing (SPaT)
Signal phase and timing (SPaT) is a message type in the SAE J2735 V2X standard that broadcasts a traffic signal's current and upcoming states to connected vehicles.
Signal timing
Signal timing is the traffic engineering method of setting green, yellow, red, and all-red intervals, cycle length, green splits, and offsets between adjacent intersections to control vehicle and pedestrian flow.
Simca
Simca (Société Industrielle de Mécanique et de Carrosserie Automobile) was a French carmaker founded by Fiat in 1934, led by Henri Pigozzi, sold to Peugeot in 1978 and renamed Talbot in 1979.
Sinclair C5
The Sinclair C5 is a one-person battery-electric tricycle launched in the UK in 1985 by Sir Clive Sinclair, which failed commercially and became a cult classic.
Single pivot suspension
Single pivot suspension is a bicycle rear suspension design in which a swingarm rotates about a single pivot on the main frame, with a shock absorber controlling its motion.
Single-point urban interchange
A single-point urban interchange is a highway interchange where all freeway ramps meet the cross street at one large signalized intersection, developed in 1970 to improve traffic capacity.
Sinotruk
Sinotruk (中国重汽), formally China National Heavy Duty Truck Group, is a Chinese heavy-truck maker founded in 1956 in Jinan, Shandong, and known for HOWO trucks.
Škoda Auto
Škoda Auto is a Czech automobile manufacturer based in Mladá Boleslav, founded in 1895 as Laurin & Klement and wholly owned by Volkswagen Group since the 1990s.
Škoda Elroq
The Škoda Elroq is a compact battery-electric SUV built by Czech carmaker Škoda Auto on Volkswagen's MEB platform, the electric counterpart to the Karoq, premiered in 2024.
Škoda Enyaq
The Škoda Enyaq is a battery-electric compact SUV built by Czech carmaker Škoda Auto on Volkswagen's MEB platform, sold since 2020, with a coupé variant from 2022.
Škoda Epiq
The Škoda Epiq is a compact all-electric SUV crossover from Czech carmaker Škoda Auto, premiered in May 2026 as the brand's smallest and most affordable electric model.
Škoda Fabia
The Škoda Fabia is a small hatchback produced by Czech manufacturer Škoda Auto since 1999 as its entry-level model, with more than five million built across four generations.
Škoda Kodiaq
The Škoda Kodiaq, also known as Kodiaq, is a large seven-seat SUV built by Czech carmaker Škoda Auto, its first large SUV, introduced in 2016.
Škoda Kylaq
The Škoda Kylaq is a sub-4-meter compact SUV from Škoda Auto Volkswagen India, unveiled in November 2024, launched in 2025, and rated five stars by Bharat NCAP.